CHICAGO ZOOLOGICAL SOCIETY: Form 990, tax year 2017

View the entire original 990 at ProPublica ↗

Organization: CHICAGO ZOOLOGICAL SOCIETY (EIN 36-2167016)
Tax period: 2017-01-01 to 2017-12-31
Filed: 2018-10-04
IRS object ID: 201802779349300205
Schema version: 2017v2.3
Source: Download XML · Original 990 at ProPublica

Every field in the e-filed return. Faint text is the IRS element name, for citing.

Return header
Form 990
Schedule A
Schedule B
Schedule C
Schedule D
Schedule F
Schedule G
Schedule I
Schedule J
Schedule K
Schedule L
Schedule M
Schedule O
Schedule R

Return header ReturnHeader

Field	Value	IRS element (for citing)
Return	2018-10-04T07:50:34-00:00	ReturnTs
Tax Period End	2017-12-31	TaxPeriodEndDt

Preparer Firm PreparerFirmGrp

Preparer Firm Name PreparerFirmName

Field	Value	IRS element (for citing)
Business Name Line1	Plante Moran PLLC	BusinessNameLine1Txt

Preparer US Address PreparerUSAddress

Field	Value	IRS element (for citing)
Address Line1	10 South Riverside Plaza 9th floor	AddressLine1Txt
City	Chicago	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60606	ZIPCd

Field	Value	IRS element (for citing)
Return Type	990	ReturnTypeCd
Tax Period Begin	2017-01-01	TaxPeriodBeginDt

Filer Filer

Field	Value	IRS element (for citing)
EIN	362167016	EIN

Business Name BusinessName

Field	Value	IRS element (for citing)
Business Name Line1	Chicago Zoological Society	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Business Name Control	CHIC	BusinessNameControlTxt
Phone	7086888400	PhoneNum

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Road	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Business Officer BusinessOfficerGrp

Field	Value	IRS element (for citing)
Person	Stuart D Strahl PhD	PersonNm
Person Title	President and CEO	PersonTitleTxt
Signature	2018-10-04	SignatureDt
Discuss With Paid Preparer	Yes (true)	DiscussWithPaidPreparerInd

Preparer Person PreparerPersonGrp

Field	Value	IRS element (for citing)
Preparer Person	LuAnn Trapp	PreparerPersonNm
Phone	3122071040	PhoneNum
Preparation	2018-10-04	PreparationDt

Field	Value	IRS element (for citing)
Tax	2017	TaxYr
Build TS	2022-09-23 18:48:47Z	BuildTS

Form 990 IRS990

Doing Business As Name DoingBusinessAsName

Field	Value	IRS element (for citing)
Business Name Line1	Brookfield Zoo	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Principal Officer	Stuart D Strahl PhD	PrincipalOfficerNm

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Road	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Field	Value	IRS element (for citing)
Gross Receipts	$104,386,344	GrossReceiptsAmt
Group Return For Affiliates	false	GroupReturnForAffiliatesInd
Organization501c3	Yes (X)	Organization501c3Ind
Website Address	www.czs.org	WebsiteAddressTxt
Type Of Organization Corp	Yes (X)	TypeOfOrganizationCorpInd
Formation	1921	FormationYr
Legal Domicile State	IL	LegalDomicileStateCd
Activity Or Mission	To inspire conservation leadership by connecting people with wildlife and nature.	ActivityOrMissionDesc
Voting Members Governing Body	44	VotingMembersGoverningBodyCnt
Voting Members Independent	43	VotingMembersIndependentCnt
Total Employee	1635	TotalEmployeeCnt
Total Volunteers	1287	TotalVolunteersCnt
Total Gross UBI	$1,529,155	TotalGrossUBIAmt
Net Unrelated Bus Txbl Incm	-$88,421	NetUnrelatedBusTxblIncmAmt
PY Contributions Grants	$33,020,819	PYContributionsGrantsAmt
CY Contributions Grants	$39,723,641	CYContributionsGrantsAmt
PY Program Service Revenue	$21,267,721	PYProgramServiceRevenueAmt
CY Program Service Revenue	$22,571,849	CYProgramServiceRevenueAmt
PY Investment Income	-$1,145,624	PYInvestmentIncomeAmt
CY Investment Income	$3,451,157	CYInvestmentIncomeAmt
PY Other Revenue	$9,442,258	PYOtherRevenueAmt
CY Other Revenue	$10,042,895	CYOtherRevenueAmt
PY Total Revenue	$62,585,174	PYTotalRevenueAmt
CY Total Revenue	$75,789,542	CYTotalRevenueAmt
PY Grants And Similar Paid	$227,147	PYGrantsAndSimilarPaidAmt
CY Grants And Similar Paid	$236,509	CYGrantsAndSimilarPaidAmt
CY Benefits Paid To Members	$0	CYBenefitsPaidToMembersAmt
PY Salaries Comp Emp Bnft Paid	$41,302,317	PYSalariesCompEmpBnftPaidAmt
CY Salaries Comp Emp Bnft Paid	$43,546,019	CYSalariesCompEmpBnftPaidAmt
PY Total Prof Fndrsng Expns	$66,590	PYTotalProfFndrsngExpnsAmt
CY Total Prof Fndrsng Expns	$70,046	CYTotalProfFndrsngExpnsAmt
CY Total Fundraising Expense	$3,200,585	CYTotalFundraisingExpenseAmt
PY Other Expenses	$29,255,487	PYOtherExpensesAmt
CY Other Expenses	$29,557,296	CYOtherExpensesAmt
PY Total Expenses	$70,851,541	PYTotalExpensesAmt
CY Total Expenses	$73,409,870	CYTotalExpensesAmt
PY Revenues Less Expenses	-$8,266,367	PYRevenuesLessExpensesAmt
CY Revenues Less Expenses	$2,379,672	CYRevenuesLessExpensesAmt
Total Assets BOY	$213,879,000	TotalAssetsBOYAmt
Total Assets EOY	$218,818,000	TotalAssetsEOYAmt
Total Liabilities BOY	$53,482,000	TotalLiabilitiesBOYAmt
Total Liabilities EOY	$54,100,000	TotalLiabilitiesEOYAmt
Net Assets Or Fund Balances BOY	$160,397,000	NetAssetsOrFundBalancesBOYAmt
Net Assets Or Fund Balances EOY	$164,718,000	NetAssetsOrFundBalancesEOYAmt
Info In Schedule O Part III	Yes (X)	InfoInScheduleOPartIIIInd
Mission	To inspire conservation leadership by connecting people with wildlife and nature.	MissionDesc
Significant New Program Srvc	false	SignificantNewProgramSrvcInd
Significant Change	false	SignificantChangeInd
Expense	$16,470,618	ExpenseAmt
Revenue	$3,327,821	RevenueAmt
Desc	Center for Science and Animal Well-Being CSAW More than 2500 ambassadors of the animal kingdom provide our visitors with a rare opportunity to see species from around the globe and experience up close, personal encounters with some. Expert care of these ambassadors is a time-honored tradition at CZS, where innovations in husbandry techniques and pioneering breeding programs are part of the cuttting edge culture of excellence. Staff in the CSAW integrate disciplines such as endocrinology, population biology, behavioral science, nutrition and veterinary science to determine the best ways to provide and continuously care for the animals. They also incorporate models and practices from around the world, and from an array of animal care professionals, to develop the best possible zoo-based animal care and management practices.	Desc

Prog Srvc Accom Acty2 ProgSrvcAccomActy2Grp

Field	Value	IRS element (for citing)
Expense	$10,550,000	ExpenseAmt
Revenue	$6,425,195	RevenueAmt
Desc	Visitor Services Brookfield Zoo served over 2.2 million visitors in 2017, providing them with transportation, shops and restaurants. In addition to motorized, narrated educational tours throughout the park, the Zoo offers strollers, wheelchairs, wagons, etc. to help visitors have a more enjoyable visit. The shops make available goods which promote an interest in and understanding of the natural world and an awareness of how people around the world co-exist with the animals and the ecosystems where they live, and how choices made by humans impact the animals and the environment. The restaurants allow our visitors to stay in the park for lunch and expand the time they can enjoy the park. Visitor Services works closely with educators and designers to develop food packaging programs and select products which convey education and conservation related messages. Visitor Services also provides opportunities for families, businesses, senior groups, social clubs, etc. to hold special outings at the park where they receive admission, special tours and interaction with zoo staff.	Desc

Prog Srvc Accom Acty3 ProgSrvcAccomActy3Grp

Field	Value	IRS element (for citing)
Expense	$10,512,000	ExpenseAmt
Desc	Care of Buildings and Grounds The CZS maintains over 214 acres of land and 75 buildings to exhibit over 2,500 animals. Guests see examples of our environmentally sound policies throughout the Zoo grounds including energy efficient cooling systems, plentiful recycling containers and clean burning natural gas vehicles.	Desc

Field	Value	IRS element (for citing)
Total Other Prog Srvc Expense	$25,718,000	TotalOtherProgSrvcExpenseAmt
Total Other Prog Srvc Grant	$236,509	TotalOtherProgSrvcGrantAmt
Total Other Prog Srvc Revenue	$12,928,536	TotalOtherProgSrvcRevenueAmt
Total Program Service Expenses	$63,250,618	TotalProgramServiceExpensesAmt
Described In Section501c3	Yes (true)	DescribedInSection501c3Ind
Schedule B Required	Yes (true)	ScheduleBRequiredInd
Political Campaign Acty	false	PoliticalCampaignActyInd
Lobbying Activities	Yes (true)	LobbyingActivitiesInd
Subject To Proxy Tax	false	SubjectToProxyTaxInd
Donor Advised Fund	Yes (true)	DonorAdvisedFundInd
Conservation Easements	false	ConservationEasementsInd
Collections Of Art	Yes (true)	CollectionsOfArtInd
Credit Counseling	false	CreditCounselingInd
Temp Or Permanent Endowments	Yes (true)	TempOrPermanentEndowmentsInd
Report Land Building Equipment	Yes (true)	ReportLandBuildingEquipmentInd
Report Investments Other Sec	false	ReportInvestmentsOtherSecInd
Report Program Related Invst	false	ReportProgramRelatedInvstInd
Report Other Assets	false	ReportOtherAssetsInd
Report Other Liabilities	Yes (true)	ReportOtherLiabilitiesInd
Include FIN48 Footnote	Yes (true)	IncludeFIN48FootnoteInd
Independent Audit Fincl Stmt	Yes (true)	IndependentAuditFinclStmtInd
Consolidated Audit Fincl Stmt	Yes (true)	ConsolidatedAuditFinclStmtInd
School Operating	false	SchoolOperatingInd
Foreign Office	Yes (true)	ForeignOfficeInd
Foreign Activities	Yes (true)	ForeignActivitiesInd
More Than5000 K To Org	Yes (true)	MoreThan5000KToOrgInd
More Than5000 K To Individuals	Yes (true)	MoreThan5000KToIndividualsInd
Professional Fundraising	Yes (true)	ProfessionalFundraisingInd
Fundraising Activities	Yes (true)	FundraisingActivitiesInd
Gaming Activities	Yes (true)	GamingActivitiesInd
Operate Hospital	false	OperateHospitalInd
Grants To Organizations	Yes (true)	GrantsToOrganizationsInd
Grants To Individuals	Yes (true)	GrantsToIndividualsInd
Schedule J Required	Yes (true)	ScheduleJRequiredInd
Tax Exempt Bonds	Yes (true)	TaxExemptBondsInd
Invest Tax Exempt Bonds	false	InvestTaxExemptBondsInd
Escrow Account	false	EscrowAccountInd
On Behalf Of Issuer	false	OnBehalfOfIssuerInd
Engaged In Excess Benefit Trans	false	EngagedInExcessBenefitTransInd
PY Excess Benefit Trans	false	PYExcessBenefitTransInd
Loan Outstanding	false	LoanOutstandingInd
Grant To Related Person	false	GrantToRelatedPersonInd
Business Rln With Org Mem	false	BusinessRlnWithOrgMemInd
Business Rln With Fam Mem	Yes (true)	BusinessRlnWithFamMemInd
Business Rln With Officer Ent	false	BusinessRlnWithOfficerEntInd
Deductible Non Cash Contri	Yes (true)	DeductibleNonCashContriInd
Deductible Art Contribution	false	DeductibleArtContributionInd
Terminate Operations	false	TerminateOperationsInd
Partial Liquidation	false	PartialLiquidationInd
Disregarded Entity	false	DisregardedEntityInd
Related Entity	false	RelatedEntityInd
Related Organization Ctrl Ent	false	RelatedOrganizationCtrlEntInd
Trnsfr Exmpt Non Chrtbl Rltd Org	false	TrnsfrExmptNonChrtblRltdOrgInd
Activities Conducted Prtshp	false	ActivitiesConductedPrtshpInd
Schedule O Required	Yes (true)	ScheduleORequiredInd
IRP Document	102	IRPDocumentCnt
IRP Document W2 G	0	IRPDocumentW2GCnt
Backup Wthld Compliance	Yes (true)	BackupWthldComplianceInd
Employee	1635	EmployeeCnt
Employment Tax Returns Filed	Yes (true)	EmploymentTaxReturnsFiledInd
Unrelated Bus Incm Over Limit	Yes (true)	UnrelatedBusIncmOverLimitInd
Form990 T Filed	Yes (true)	Form990TFiledInd
Foreign Financial Account	false	ForeignFinancialAccountInd
Prohibited Tax Shelter Trans	false	ProhibitedTaxShelterTransInd
Taxable Party Notification	false	TaxablePartyNotificationInd
Nondeductible Contributions	false	NondeductibleContributionsInd
Quid Pro Quo Contributions	Yes (true)	QuidProQuoContributionsInd
Quid Pro Quo Contri Discl	Yes (true)	QuidProQuoContriDisclInd
Form8282 Property Disposed Of	false	Form8282PropertyDisposedOfInd
Rcv Fnds To Pay Prsnl Bnft Cntrct	false	RcvFndsToPayPrsnlBnftCntrctInd
Pay Premiums Prsnl Bnft Cntrct	false	PayPremiumsPrsnlBnftCntrctInd
Indoor Tanning Services	false	IndoorTanningServicesInd
Info In Schedule O Part VI	Yes (X)	InfoInScheduleOPartVIInd
Governing Body Voting Members	44	GoverningBodyVotingMembersCnt
Independent Voting Member	43	IndependentVotingMemberCnt
Family Or Business Rln	Yes (true)	FamilyOrBusinessRlnInd
Delegation Of Mgmt Duties	false	DelegationOfMgmtDutiesInd
Change To Org Documents	Yes (true)	ChangeToOrgDocumentsInd
Material Diversion Or Misuse	false	MaterialDiversionOrMisuseInd
Members Or Stockholders	Yes (true)	MembersOrStockholdersInd
Election Of Board Members	Yes (true)	ElectionOfBoardMembersInd
Decisions Subject To Approva	false	DecisionsSubjectToApprovaInd
Minutes Of Governing Body	Yes (true)	MinutesOfGoverningBodyInd
Minutes Of Committees	Yes (true)	MinutesOfCommitteesInd
Officer Mailing Address	false	OfficerMailingAddressInd
Local Chapters	false	LocalChaptersInd
Form990 Provided To Gvrn Body	Yes (true)	Form990ProvidedToGvrnBodyInd
Conflict Of Interest Policy	Yes (true)	ConflictOfInterestPolicyInd
Annual Disclosure Covered Prsn	Yes (true)	AnnualDisclosureCoveredPrsnInd
Regular Monitoring Enfrc	Yes (true)	RegularMonitoringEnfrcInd
Whistleblower Policy	Yes (true)	WhistleblowerPolicyInd
Document Retention Policy	Yes (true)	DocumentRetentionPolicyInd
Compensation Process CEO	Yes (true)	CompensationProcessCEOInd
Compensation Process Other	Yes (true)	CompensationProcessOtherInd
Investment In Joint Venture	false	InvestmentInJointVentureInd
States Where Copy Of Return Is Fld	FL	StatesWhereCopyOfReturnIsFldCd
States Where Copy Of Return Is Fld	IL	StatesWhereCopyOfReturnIsFldCd
States Where Copy Of Return Is Fld	WI	StatesWhereCopyOfReturnIsFldCd
Upon Request	Yes (X)	UponRequestInd

Books In Care Of Detail BooksInCareOfDetail

Field	Value	IRS element (for citing)
Person	David E Burns	PersonNm
Phone	7086888387	PhoneNum

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Road	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Form990 Part VII Section A Form990PartVIISectionAGrp (61 entries)

TitleTitleTxt	Average Hours Per WeekAverageHoursPerWeekRt	Individual Trustee Or DirectorIndividualTrusteeOrDirectorInd	OfficerOfficerInd	Reportable Comp From OrgReportableCompFromOrgAmt	Reportable Comp From Rltd OrgReportableCompFromRltdOrgAmt	Other CompensationOtherCompensationAmt	Key EmployeeKeyEmployeeInd	Highest Compensated EmployeeHighestCompensatedEmployeeInd
John P Grube
Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Fred A Krehbiel
Honorary Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
William C Kunkler III
Deputy Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Elizabeth Hamill Bramsen
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Merrick M Elfman
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Bert A Getz Jr
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Sakeba Issa MD
Vice-Chairman of the Board through 6/2017	002.00	Yes (X)	Yes (X)	$0	$0	$0
Cherryl T Thomas
Vice-Chairman of the Board	002.00	Yes (X)	Yes (X)	$0	$0	$0
Kelley C Schueler
Trustee through 8/17 ViceChrmn of Bd as of 8/17	002.00	Yes (X)	Yes (X)	$0	$0	$0
Kathryn Babcock Shaffer
Trustee through 8/17 ViceChrmn of Bd as of 8/17	002.00	Yes (X)	Yes (X)	$0	$0	$0
Michael P Emmert
Treasurer	002.00	Yes (X)	Yes (X)	$0	$0	$0
Randall G Vickery
Secretary	002.00	Yes (X)	Yes (X)	$0	$0	$0
Stuart D Strahl PhD
President and CEO	040.00	Yes (X)	Yes (X)	$564,181	$0	$78,757
Stuart B Abelson
Trustee	002.00	Yes (X)		$0	$0	$0
Mrs LW Alberts
Trustee	002.00	Yes (X)		$0	$0	$0
George Barr
Trustee as of 5/2017	002.00	Yes (X)		$0	$0	$0
Walter W Becky II
Trustee as of 3/2017	002.00	Yes (X)		$0	$0	$0
Stephen P Bent
Trustee	002.00	Yes (X)		$0	$0	$0
Jay D Bergman
Trustee	002.00	Yes (X)		$0	$0	$0
Edward McCormick Blair Jr
Trustee	002.00	Yes (X)		$0	$0	$0
Barbara J Bradford
Trustee	002.00	Yes (X)		$0	$0	$0
John A Carpenter
Trustee	002.00	Yes (X)		$0	$0	$0
Kevin M Carmody
Trustee	002.00	Yes (X)		$0	$0	$0
Dr Bonny Chen
Trustee as of 5/2017	002.00	Yes (X)		$0	$0	$0
Dawn M Davis
Trustee	002.00	Yes (X)		$0	$0	$0
Lawrence E DeMar
Trustee through 5/2017	002.00	Yes (X)		$0	$0	$0
Michael F DeSantiago
Trustee	002.00	Yes (X)		$0	$0	$0
Gregory J DiDomenico
Trustee as of 5/2017	002.00	Yes (X)		$0	$0	$0
Arthur J Fogel
Trustee	002.00	Yes (X)		$0	$0	$0
Sasha Gerritson
Trustee	002.00	Yes (X)		$0	$0	$0
Mrs James M Guyette
Trustee through 5/2017	002.00	Yes (X)		$0	$0	$0
Philip Lee Harris
Trustee	002.00	Yes (X)		$0	$0	$0
Christine E Holden
Trustee	002.00	Yes (X)		$0	$0	$0
William L Hood Jr
Trustee through 3/2017	002.00	Yes (X)		$0	$0	$0
Mrs Peter H Huizenga
Trustee	002.00	Yes (X)		$0	$0	$0
Jill V Javors
Trustee through 4/2017	002.00	Yes (X)		$0	$0	$0
Lisa N Johnson
Trustee	002.00	Yes (X)		$0	$0	$0
Molly Keller
Trustee as of 5/2017	002.00	Yes (X)		$0	$0	$0
Barbara Levy Kipper
Trustee	002.00	Yes (X)		$0	$0	$0
Kevin W Kirby
Trustee	002.00	Yes (X)		$0	$0	$0
Angelo C Kleronomos
Trustee through 3/2017	002.00	Yes (X)		$0	$0	$0
William O Lipinski
Trustee	002.00	Yes (X)		$0	$0	$0
Jerry Manne
Trustee	002.00	Yes (X)		$0	$0	$0
Christian B McGrath
Trustee	002.00	Yes (X)		$0	$0	$0
Toni Reed Preckwinkle
Trustee	002.00	Yes (X)		$0	$0	$0
Mark G Sander
Trustee	002.00	Yes (X)		$0	$0	$0
John W Taylor III
Trustee	002.00	Yes (X)		$0	$0	$0
William E Thonn
Trustee	002.00	Yes (X)		$0	$0	$0
Christopher D Traut
Trustee through 5/2017	002.00	Yes (X)		$0	$0	$0
Jeffrey D Warner
Trustee as of 10/2017	002.00	Yes (X)		$0	$0	$0
Patrick E Whiteside
Trustee as of 5/2017	002.00	Yes (X)		$0	$0	$0
Richard G Gamble
Chief Operating Officer/Exec. VP	040.00			$323,950	$0	$29,148	Yes (X)
Cynthia W Zeigler
Chief Advancement Officer	040.00			$300,739	$0	$18,537	Yes (X)
Christopher Jabin
Sr. VP Development	040.00			$241,267	$0	$23,288	Yes (X)
Sarah Breen-Bartecki
Interim Sr VP Conserv. Educ. Community	040.00			$207,654	$0	$12,972	Yes (X)
Frank W Zeigler
Sr. VP Animal Programs	040.00			$201,504	$0	$15,022	Yes (X)
Michael Owens
VP Information Technology	040.00			$176,466	$0	$14,665		Yes (X)
Sandra L Dornhecker
VP Human Resources	040.00			$172,836	$0	$18,383		Yes (X)
Jerome E Johnston
VP Guest Services Operations	040.00			$166,055	$0	$11,681		Yes (X)
Leah Rippe
VP Marketing Communications	040.00			$158,142	$0	$19,249		Yes (X)
Jennifer L Baader
VP Government Affairs	040.00			$139,187	$0	$7,108		Yes (X)

Field	Value	IRS element (for citing)
Total Reportable Comp From Org	$2,651,981	TotalReportableCompFromOrgAmt
Total Other Compensation	$248,810	TotalOtherCompensationAmt
Indiv Rcvd Greater Than100 K	34	IndivRcvdGreaterThan100KCnt
Former Ofcr Employees Listed	false	FormerOfcrEmployeesListedInd
Total Comp Greater Than150 K	Yes (true)	TotalCompGreaterThan150KInd
Compensation From Other Srcs	false	CompensationFromOtherSrcsInd

Contractor Compensation ContractorCompensationGrp (5 entries)

Address Line1ContractorAddress/USAddress/AddressLine1Txt	CityContractorAddress/USAddress/CityNm	State AbbreviationContractorAddress/USAddress/StateAbbreviationCd	ZIPContractorAddress/USAddress/ZIPCd	ServicesServicesDesc	CompensationCompensationAmt
Two by Four
10 N Dearborn St Suite 1000	Chicago	IL	60602	Advertising	$1,100,958
Paymentech LLC
14221 Dallas Parkway	Dallas	TX	75254	Payment Card Processing	$606,559
University of Illinois
506 S Wright St	Urbana	IL	61802	Veterinary/Pathology/Lab/Research Svcs	$458,739
PBA Inc
PO Box 2023	Carol Stream	IL	60132	Benefits Administration	$436,028
Lanternfest Creative LLC
204 Meadows Dr	Tarpon Springs	FL	34688	3rd Party Exhibit fees	$421,840

Field	Value	IRS element (for citing)
Cntrct Rcvd Greater Than100 K	29	CntrctRcvdGreaterThan100KCnt
Membership Dues	$9,862,972	MembershipDuesAmt
Fundraising	$1,611,230	FundraisingAmt
Government Grants	$15,945,068	GovernmentGrantsAmt
All Other Contributions	$12,304,371	AllOtherContributionsAmt
Noncash Contributions	$1,969,830	NoncashContributionsAmt
Total Contributions	$39,723,641	TotalContributionsAmt

Program Service Revenue ProgramServiceRevenueGrp (5 entries)

DescDesc	BusinessBusinessCd	Total Revenue ColumnTotalRevenueColumnAmt	Related Or Exempt Func IncomeRelatedOrExemptFuncIncomeAmt	Unrelated Business RevenueUnrelatedBusinessRevenueAmt	ExclusionExclusionAmt
General Admissions	900099	$6,206,912	$6,206,912
Memberships	900099	$4,810,404	$4,810,404
Visitor Services	900099	$3,400,021	$2,013,899	$1,386,122
Admissions-Internal Attractions	900099	$3,061,532	$3,061,532
Visitor Parking	900099	$2,628,311			$2,628,311

Total Oth Program Service Rev TotalOthProgramServiceRevGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$2,464,669	TotalRevenueColumnAmt
Related Or Exempt Func Income	$2,037,873	RelatedOrExemptFuncIncomeAmt
Unrelated Business Revenue	$143,033	UnrelatedBusinessRevenueAmt
Exclusion	$283,763	ExclusionAmt

Field	Value	IRS element (for citing)
Total Program Service Revenue	$22,571,849	TotalProgramServiceRevenueAmt

Investment Income InvestmentIncomeGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$1,014,980	TotalRevenueColumnAmt
Exclusion	$1,014,980	ExclusionAmt

Gross Rents GrossRentsGrp

Field	Value	IRS element (for citing)
Real	$52,400	RealAmt

Rental Income Or Loss RentalIncomeOrLossGrp

Field	Value	IRS element (for citing)
Real	$52,400	RealAmt

Net Rental Income Or Loss NetRentalIncomeOrLossGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$52,400	TotalRevenueColumnAmt
Exclusion	$52,400	ExclusionAmt

Gross Amount Sales Assets GrossAmountSalesAssetsGrp

Field	Value	IRS element (for citing)
Securities	$26,363,140	SecuritiesAmt

Less Cost Oth Basis Sales Expnss LessCostOthBasisSalesExpnssGrp

Field	Value	IRS element (for citing)
Securities	$23,926,963	SecuritiesAmt

Gain Or Loss GainOrLossGrp

Field	Value	IRS element (for citing)
Securities	$2,436,177	SecuritiesAmt

Net Gain Or Loss Investments NetGainOrLossInvestmentsGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$2,436,177	TotalRevenueColumnAmt
Exclusion	$2,436,177	ExclusionAmt

Field	Value	IRS element (for citing)
Fundraising Gross Income	$330,426	FundraisingGrossIncomeAmt
Contri Rpt Fundraising Event	$1,611,230	ContriRptFundraisingEventAmt
Fundraising Direct Expenses	$701,594	FundraisingDirectExpensesAmt

Net Incm From Fundraising Evt NetIncmFromFundraisingEvtGrp

Field	Value	IRS element (for citing)
Total Revenue Column	-$371,168	TotalRevenueColumnAmt
Exclusion	-$371,168	ExclusionAmt

Field	Value	IRS element (for citing)
Gaming Gross Income	$51,801	GamingGrossIncomeAmt
Gaming Direct Expenses	$15,152	GamingDirectExpensesAmt

Net Income From Gaming NetIncomeFromGamingGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$36,649	TotalRevenueColumnAmt
Exclusion	$36,649	ExclusionAmt

Field	Value	IRS element (for citing)
Gross Sales Of Inventory	$14,278,107	GrossSalesOfInventoryAmt
Cost Of Goods Sold	$3,953,093	CostOfGoodsSoldAmt

Net Income Or Loss NetIncomeOrLossGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$10,325,014	TotalRevenueColumnAmt
Related Or Exempt Func Income	$3,021,777	RelatedOrExemptFuncIncomeAmt
Exclusion	$7,303,237	ExclusionAmt

Total Revenue TotalRevenueGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$75,789,542	TotalRevenueColumnAmt
Related Or Exempt Func Income	$21,152,397	RelatedOrExemptFuncIncomeAmt
Unrelated Business Revenue	$1,529,155	UnrelatedBusinessRevenueAmt
Exclusion	$13,384,349	ExclusionAmt

Grants To Domestic Orgs GrantsToDomesticOrgsGrp

Field	Value	IRS element (for citing)
Total	$155,393	TotalAmt
Program Services	$155,393	ProgramServicesAmt

Grants To Domestic Individuals GrantsToDomesticIndividualsGrp

Field	Value	IRS element (for citing)
Total	$19,000	TotalAmt
Program Services	$19,000	ProgramServicesAmt

Foreign Grants ForeignGrantsGrp

Field	Value	IRS element (for citing)
Total	$62,116	TotalAmt
Program Services	$62,116	ProgramServicesAmt

Benefits To Members BenefitsToMembersGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Comp Current Ofcr Directors CompCurrentOfcrDirectorsGrp

Field	Value	IRS element (for citing)
Total	$2,017,019	TotalAmt
Program Services	$755,251	ProgramServicesAmt
Management And General	$458,706	ManagementAndGeneralAmt
Fundraising	$803,062	FundraisingAmt

Comp Disqual Persons CompDisqualPersonsGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Other Salaries And Wages OtherSalariesAndWagesGrp

Field	Value	IRS element (for citing)
Total	$31,861,347	TotalAmt
Program Services	$27,805,853	ProgramServicesAmt
Management And General	$2,699,676	ManagementAndGeneralAmt
Fundraising	$1,355,818	FundraisingAmt

Pension Plan Contributions PensionPlanContributionsGrp

Field	Value	IRS element (for citing)
Total	$763,515	TotalAmt
Program Services	$664,258	ProgramServicesAmt
Management And General	$68,716	ManagementAndGeneralAmt
Fundraising	$30,541	FundraisingAmt

Other Employee Benefits OtherEmployeeBenefitsGrp

Field	Value	IRS element (for citing)
Total	$6,297,741	TotalAmt
Program Services	$4,870,574	ProgramServicesAmt
Management And General	$924,555	ManagementAndGeneralAmt
Fundraising	$502,612	FundraisingAmt

Payroll Taxes PayrollTaxesGrp

Field	Value	IRS element (for citing)
Total	$2,606,397	TotalAmt
Program Services	$2,267,565	ProgramServicesAmt
Management And General	$234,575	ManagementAndGeneralAmt
Fundraising	$104,257	FundraisingAmt

Fees For Services Management FeesForServicesManagementGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Fees For Services Legal FeesForServicesLegalGrp

Field	Value	IRS element (for citing)
Total	$327,803	TotalAmt
Management And General	$327,803	ManagementAndGeneralAmt

Fees For Services Accounting FeesForServicesAccountingGrp

Field	Value	IRS element (for citing)
Total	$69,450	TotalAmt
Management And General	$69,450	ManagementAndGeneralAmt

Fees For Services Lobbying FeesForServicesLobbyingGrp

Field	Value	IRS element (for citing)
Total	$57,965	TotalAmt
Program Services	$10,465	ProgramServicesAmt
Management And General	$47,500	ManagementAndGeneralAmt

Fees For Services Prof Fundraising FeesForServicesProfFundraising

Field	Value	IRS element (for citing)
Total	$70,046	TotalAmt
Fundraising	$70,046	FundraisingAmt

Fees For Srvc Invst Mgmnt Fees FeesForSrvcInvstMgmntFeesGrp

Field	Value	IRS element (for citing)
Total	$135,638	TotalAmt
Management And General	$135,638	ManagementAndGeneralAmt

Fees For Services Other FeesForServicesOtherGrp

Field	Value	IRS element (for citing)
Total	$6,497,545	TotalAmt
Program Services	$6,249,626	ProgramServicesAmt
Management And General	$186,675	ManagementAndGeneralAmt
Fundraising	$61,244	FundraisingAmt

Advertising AdvertisingGrp

Field	Value	IRS element (for citing)
Total	$2,187,110	TotalAmt
Program Services	$2,187,110	ProgramServicesAmt

Office Expenses OfficeExpensesGrp

Field	Value	IRS element (for citing)
Total	$5,521,284	TotalAmt
Program Services	$5,232,853	ProgramServicesAmt
Management And General	$181,579	ManagementAndGeneralAmt
Fundraising	$106,852	FundraisingAmt

Information Technology InformationTechnologyGrp

Field	Value	IRS element (for citing)
Total	$983,425	TotalAmt
Program Services	$249,544	ProgramServicesAmt
Management And General	$709,312	ManagementAndGeneralAmt
Fundraising	$24,569	FundraisingAmt

Royalties RoyaltiesGrp

Field	Value	IRS element (for citing)
Total	$33,425	TotalAmt
Program Services	$33,425	ProgramServicesAmt

Occupancy OccupancyGrp

Field	Value	IRS element (for citing)
Total	$2,855,872	TotalAmt
Program Services	$2,528,853	ProgramServicesAmt
Management And General	$301,214	ManagementAndGeneralAmt
Fundraising	$25,805	FundraisingAmt

Travel TravelGrp

Field	Value	IRS element (for citing)
Total	$223,446	TotalAmt
Program Services	$190,612	ProgramServicesAmt
Management And General	$15,158	ManagementAndGeneralAmt
Fundraising	$17,676	FundraisingAmt

Pymt Travel Entrtnmnt Pub Ofcl PymtTravelEntrtnmntPubOfclGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Conferences Meetings ConferencesMeetingsGrp

Field	Value	IRS element (for citing)
Total	$257,303	TotalAmt
Program Services	$123,713	ProgramServicesAmt
Management And General	$48,138	ManagementAndGeneralAmt
Fundraising	$85,452	FundraisingAmt

Interest InterestGrp

Field	Value	IRS element (for citing)
Total	$410,045	TotalAmt
Program Services	$410,045	ProgramServicesAmt

Payments To Affiliates PaymentsToAffiliatesGrp

Field	Value	IRS element (for citing)
Total	$0	TotalAmt

Depreciation Depletion DepreciationDepletionGrp

Field	Value	IRS element (for citing)
Total	$8,888,026	TotalAmt
Program Services	$8,888,026	ProgramServicesAmt

Insurance InsuranceGrp

Field	Value	IRS element (for citing)
Total	$590,420	TotalAmt
Program Services	$91,562	ProgramServicesAmt
Management And General	$498,858	ManagementAndGeneralAmt

Other Expenses OtherExpensesGrp (2 entries)

DescDesc	TotalTotalAmt	Program ServicesProgramServicesAmt
Revenue Bond Maintenance Fees	$315,786	$315,786
Gain/Loss on retirement of fixed assets	-$4,598	-$4,598

All Other Expenses AllOtherExpensesGrp

Field	Value	IRS element (for citing)
Total	$207,351	TotalAmt
Program Services	$143,586	ProgramServicesAmt
Management And General	$51,114	ManagementAndGeneralAmt
Fundraising	$12,651	FundraisingAmt

Total Functional Expenses TotalFunctionalExpensesGrp

Field	Value	IRS element (for citing)
Total	$73,409,870	TotalAmt
Program Services	$63,250,618	ProgramServicesAmt
Management And General	$6,958,667	ManagementAndGeneralAmt
Fundraising	$3,200,585	FundraisingAmt

Cash Non Interest Bearing CashNonInterestBearingGrp

Field	Value	IRS element (for citing)
BOY	$685,133	BOYAmt
EOY	$476,424	EOYAmt

Savings And Temp Cash Invst SavingsAndTempCashInvstGrp

Field	Value	IRS element (for citing)
BOY	$11,273,261	BOYAmt
EOY	$24,844,388	EOYAmt

Pledges And Grants Receivable PledgesAndGrantsReceivableGrp

Field	Value	IRS element (for citing)
BOY	$5,445,781	BOYAmt
EOY	$7,375,601	EOYAmt

Accounts Receivable AccountsReceivableGrp

Field	Value	IRS element (for citing)
BOY	$983,015	BOYAmt
EOY	$388,996	EOYAmt

Inventories For Sale Or Use InventoriesForSaleOrUseGrp

Field	Value	IRS element (for citing)
BOY	$776,476	BOYAmt
EOY	$783,341	EOYAmt

Prepaid Expenses Defrd Charges PrepaidExpensesDefrdChargesGrp

Field	Value	IRS element (for citing)
BOY	$600,572	BOYAmt
EOY	$631,591	EOYAmt

Field	Value	IRS element (for citing)
Land Bldg Equip Cost Or Other Bss	$274,964,948	LandBldgEquipCostOrOtherBssAmt
Land Bldg Equip Accum Deprec	$142,876,002	LandBldgEquipAccumDeprecAmt

Land Bldg Equip Basis Net LandBldgEquipBasisNetGrp

Field	Value	IRS element (for citing)
BOY	$138,662,450	BOYAmt
EOY	$132,088,946	EOYAmt

Investments Pub Traded Sec InvestmentsPubTradedSecGrp

Field	Value	IRS element (for citing)
BOY	$55,389,000	BOYAmt
EOY	$52,153,000	EOYAmt

Other Assets Total OtherAssetsTotalGrp

Field	Value	IRS element (for citing)
BOY	$63,312	BOYAmt
EOY	$75,713	EOYAmt

Total Assets TotalAssetsGrp

Field	Value	IRS element (for citing)
BOY	$213,879,000	BOYAmt
EOY	$218,818,000	EOYAmt

Accounts Payable Accr Expnss AccountsPayableAccrExpnssGrp

Field	Value	IRS element (for citing)
BOY	$5,323,513	BOYAmt
EOY	$5,325,526	EOYAmt

Deferred Revenue DeferredRevenueGrp

Field	Value	IRS element (for citing)
BOY	$7,888,884	BOYAmt
EOY	$9,011,876	EOYAmt

Tax Exempt Bond Liabilities TaxExemptBondLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$35,585,000	BOYAmt
EOY	$35,140,000	EOYAmt

Other Liabilities OtherLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$4,684,603	BOYAmt
EOY	$4,622,598	EOYAmt

Total Liabilities TotalLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$53,482,000	BOYAmt
EOY	$54,100,000	EOYAmt

Field	Value	IRS element (for citing)
Organization Follows SFAS117	Yes (X)	OrganizationFollowsSFAS117Ind

Unrestricted Net Assets UnrestrictedNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$139,639,000	BOYAmt
EOY	$138,231,000	EOYAmt

Temporarily Rstr Net Assets TemporarilyRstrNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$12,887,000	BOYAmt
EOY	$18,274,000	EOYAmt

Permanently Rstr Net Assets PermanentlyRstrNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$7,871,000	BOYAmt
EOY	$8,213,000	EOYAmt

Total Net Assets Fund Balance TotalNetAssetsFundBalanceGrp

Field	Value	IRS element (for citing)
BOY	$160,397,000	BOYAmt
EOY	$164,718,000	EOYAmt

Tot Liab Net Assets Fund Balance TotLiabNetAssetsFundBalanceGrp

Field	Value	IRS element (for citing)
BOY	$213,879,000	BOYAmt
EOY	$218,818,000	EOYAmt

Field	Value	IRS element (for citing)
Info In Schedule O Part XI	Yes (X)	InfoInScheduleOPartXIInd
Reconcilation Revenue Expnss	$2,379,672	ReconcilationRevenueExpnssAmt
Net Unrlzd Gains Losses Invst	$2,243,320	NetUnrlzdGainsLossesInvstAmt
Other Changes In Net Assets	-$301,992	OtherChangesInNetAssetsAmt
Method Of Accounting Accrual	Yes (X)	MethodOfAccountingAccrualInd
Accountant Compile Or Review	false	AccountantCompileOrReviewInd
FS Audited	Yes (true)	FSAuditedInd

FS Audited Basis FSAuditedBasisGrp

Field	Value	IRS element (for citing)
Consol And Sep Basis Fincl Stmt	Yes (X)	ConsolAndSepBasisFinclStmtInd

Field	Value	IRS element (for citing)
Audit Committee	Yes (true)	AuditCommitteeInd
Federal Grant Audit Required	Yes (true)	FederalGrantAuditRequiredInd
Federal Grant Audit Performed	Yes (true)	FederalGrantAuditPerformedInd

Schedule A IRS990ScheduleA

Field	Value	IRS element (for citing)
Public Organization170	Yes (X)	PublicOrganization170Ind

Gifts Grants Contri Rcvd170 GiftsGrantsContriRcvd170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$25,975,460	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$25,793,456	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$22,337,974	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$17,583,393	CurrentTaxYearMinus1YearAmt
Current Tax Year	$24,608,097	CurrentTaxYearAmt
Total	$116,298,380	TotalAmt

Tax Rev Levied Orgnztnl Bnft170 TaxRevLeviedOrgnztnlBnft170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$16,582,929	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$18,674,437	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$18,871,517	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$15,437,426	CurrentTaxYearMinus1YearAmt
Current Tax Year	$15,115,544	CurrentTaxYearAmt
Total	$84,681,853	TotalAmt

Total Calendar Year170 TotalCalendarYear170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$42,558,389	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$44,467,893	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$41,209,491	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$33,020,819	CurrentTaxYearMinus1YearAmt
Current Tax Year	$39,723,641	CurrentTaxYearAmt
Total	$200,980,233	TotalAmt

Field	Value	IRS element (for citing)
Substantial Contributors Tot	$2,210,265	SubstantialContributorsTotAmt
Public Support Total170	$198,769,968	PublicSupportTotal170Amt

Gross Investment Income170 GrossInvestmentIncome170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$1,347,792	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years	$1,248,409	CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years	$1,130,173	CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year	$906,995	CurrentTaxYearMinus1YearAmt
Current Tax Year	$1,014,980	CurrentTaxYearAmt
Total	$5,648,349	TotalAmt

Unrelated Business Net Incm170 UnrelatedBusinessNetIncm170Grp

Field	Value	IRS element (for citing)
Current Tax Year Minus4 Years	$55,173	CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus1 Year	$11,592	CurrentTaxYearMinus1YearAmt
Total	$66,765	TotalAmt

Field	Value	IRS element (for citing)
Total Support	$206,695,347	TotalSupportAmt
Gross Receipts Rltd Activities	$159,538,288	GrossReceiptsRltdActivitiesAmt
Public Support CY170	0.96170	PublicSupportCY170Pct
Public Support PY170	0.96430	PublicSupportPY170Pct
Thirty Thr Pct Suprt Tests CY170	Yes (X)	ThirtyThrPctSuprtTestsCY170Ind
Public Support CY509	0.00000	PublicSupportCY509Pct
Investment Income CY	0.00000	InvestmentIncomeCYPct

Schedule B IRS990ScheduleB

Contributor Information ContributorInformationGrp

Field	Value	IRS element (for citing)
Contributor	RESTRICTED	ContributorNum

Contributor Business Name ContributorBusinessName

Field	Value	IRS element (for citing)
Business Name Line1	RESTRICTED	BusinessNameLine1

Contributor US Address ContributorUSAddress

Field	Value	IRS element (for citing)
Address Line1	RESTRICTED	AddressLine1
Address Line2	RESTRICTED	AddressLine2
City	RESTRICTED	City
State	RESTRICTED	State
ZIP Code	RESTRICTED	ZIPCode

Field	Value	IRS element (for citing)
Total Contributions	RESTRICTED	TotalContributionsAmt

Schedule C IRS990ScheduleC

Field	Value	IRS element (for citing)
Volunteers	false	VolunteersInd
Paid Staff Or Management	Yes (true)	PaidStaffOrManagementInd
Media Advertisements	false	MediaAdvertisementsInd
Mailings Members	false	MailingsMembersInd
Publications Or Broadcast	false	PublicationsOrBroadcastInd
Grants Other Organizations	false	GrantsOtherOrganizationsInd
Direct Contact Legislators	Yes (true)	DirectContactLegislatorsInd
Direct Contact Legislators	$83,717	DirectContactLegislatorsAmt
Rallies Demonstrations	false	RalliesDemonstrationsInd
Other Activities	false	OtherActivitiesInd
Total Lobbying Expenditures	$83,717	TotalLobbyingExpendituresAmt
Not Described Section501c3	false	NotDescribedSection501c3Ind

Supplemental Information Detail SupplementalInformationDetail

Field	Value	IRS element (for citing)
Form And Line Reference	II-B 1A-J	FormAndLineReferenceDesc
Explanation	The Chicago Zoological Society is a private non profit organization that operates Brookfield Zoo on land owned by the Forest Preserve District of Cook County. Brookfield Zoo was created through an act of the Illinois Legislature and the Society annually receives partial funding from Cook County to maintain and operate the Zoo. Occasionally, the laws and regulations under which the Society was organized and is funded and operated require updating. The Society may advise and assist appropriate legislative bodies in this activity. It may also advocate the adoption or rejection of legislation. By virtue of a management agreement with the District, the Society is periodically called upon to advise on matters of public policy. The Society also employs certain staff and consultants to communicate with the State of Illinois, federal officials, county commissioners and other government officials, to inform those parties of the activities of the Society. Additionally, as required during the year, the Societys President and designated staff attend national and international professional group meetings and otherwise communicate with those groups on various matters, including the expression of opinions to appropriate congressional representatives, congressional committees or other deliberative bodies that influence public policy concerning species in danger of extinction, environmental management, the biological sciences and kindred subject, and federal regulatory agency activities affecting wildlife and its management. Also, as needed from time to time, the Society may contact its members, staff and volunteers to encourage them to express their views on pending legislation that may have a direct impact on the Society and its conservation programs.	ExplanationTxt

Schedule D IRS990ScheduleD

Field	Value	IRS element (for citing)
Funds And Other Accounts Held	2	FundsAndOtherAccountsHeldCnt
Funds And Other Accounts Contri	$385,107	FundsAndOtherAccountsContriAmt
Funds And Other Accounts Grants	$183,806	FundsAndOtherAccountsGrantsAmt
Funds And Other Accounts Vl EOY	$2,391,734	FundsAndOtherAccountsVlEOYAmt
Disclosed Org Leg Ctrl	false	DisclosedOrgLegCtrlInd
Disclosed For Charitable Prps	false	DisclosedForCharitablePrpsInd
Collection Used Pub Exhibition	Yes (X)	CollectionUsedPubExhibitionInd
Coll Used Scholarly Rsrch	Yes (X)	CollUsedScholarlyRsrchInd
Collection Used Preservation	Yes (X)	CollectionUsedPreservationInd
Coll Used Loan Or Exch Prog	Yes (X)	CollUsedLoanOrExchProgInd
Solicited Assets Sale	false	SolicitedAssetsSaleInd

CY Endwmt Fund CYEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$17,699,000	BeginningYearBalanceAmt
Contributions	$342,000	ContributionsAmt
Investment Earnings Or Losses	$2,893,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$840,000	OtherExpendituresAmt
Administrative Expenses	$20,000	AdministrativeExpensesAmt
End Year Balance	$20,074,000	EndYearBalanceAmt

CY Minus1 Yr Endwmt Fund CYMinus1YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$16,699,000	BeginningYearBalanceAmt
Contributions	$266,000	ContributionsAmt
Investment Earnings Or Losses	$1,622,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$853,000	OtherExpendituresAmt
Administrative Expenses	$35,000	AdministrativeExpensesAmt
End Year Balance	$17,699,000	EndYearBalanceAmt

CY Minus2 Yr Endwmt Fund CYMinus2YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$18,533,000	BeginningYearBalanceAmt
Contributions	$301,000	ContributionsAmt
Investment Earnings Or Losses	-$1,252,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$847,000	OtherExpendituresAmt
Administrative Expenses	$36,000	AdministrativeExpensesAmt
End Year Balance	$16,699,000	EndYearBalanceAmt

CY Minus3 Yr Endwmt Fund CYMinus3YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$18,663,000	BeginningYearBalanceAmt
Contributions	$169,000	ContributionsAmt
Investment Earnings Or Losses	$514,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$774,000	OtherExpendituresAmt
Administrative Expenses	$39,000	AdministrativeExpensesAmt
End Year Balance	$18,533,000	EndYearBalanceAmt

CY Minus4 Yr Endwmt Fund CYMinus4YrEndwmtFundGrp

Field	Value	IRS element (for citing)
Beginning Year Balance	$17,011,000	BeginningYearBalanceAmt
Contributions	$345,000	ContributionsAmt
Investment Earnings Or Losses	$2,120,000	InvestmentEarningsOrLossesAmt
Other Expenditures	$776,000	OtherExpendituresAmt
Administrative Expenses	$37,000	AdministrativeExpensesAmt
End Year Balance	$18,663,000	EndYearBalanceAmt

Field	Value	IRS element (for citing)
Board Designated Balance EOY	0.26000	BoardDesignatedBalanceEOYPct
Prmnnt Endowment Balance EOY	0.41000	PrmnntEndowmentBalanceEOYPct
Term Endowment Balance EOY	0.33000	TermEndowmentBalanceEOYPct
Endowments Held Unrelated Org	Yes (true)	EndowmentsHeldUnrelatedOrgInd
Endowments Held Related Org	false	EndowmentsHeldRelatedOrgInd

Leasehold Improvements LeaseholdImprovementsGrp

Field	Value	IRS element (for citing)
Other Cost Or Other Basis	$265,142,928	OtherCostOrOtherBasisAmt
Depreciation	$135,868,140	DepreciationAmt
Book Value	$129,274,788	BookValueAmt

Equipment EquipmentGrp

Field	Value	IRS element (for citing)
Other Cost Or Other Basis	$9,541,607	OtherCostOrOtherBasisAmt
Depreciation	$7,007,862	DepreciationAmt
Book Value	$2,533,745	BookValueAmt

Other Land Buildings OtherLandBuildingsGrp

Field	Value	IRS element (for citing)
Other Cost Or Other Basis	$280,413	OtherCostOrOtherBasisAmt
Book Value	$280,413	BookValueAmt

Field	Value	IRS element (for citing)
Total Book Value Land Buildings	$132,088,946	TotalBookValueLandBuildingsAmt

Other Securities OtherSecuritiesGrp (2 entries)

DescDesc
Financial derivatives and other financial products
Closely-held equity interests

Other Liabilities Org OtherLiabilitiesOrgGrp (7 entries)

DescDesc	AmtAmt
Federal income taxes
Accrued Post Retirement Benefit Obligation	$2,645,840
Accrued Sick Pay Benefit Obligation	$1,657,369
Charitable Gift Annuity Obligation	$252,721
Market Value of Swap Agreements	$128,551
Unamortized Bond Issue Costs	-$246,199
Other	$184,316

Field	Value	IRS element (for citing)
Total Liability	$4,622,598	TotalLiabilityAmt
Footnote Text	Yes (X)	FootnoteTextInd
Total Rev Etc Audited Fincl Stmt	$82,747,000	TotalRevEtcAuditedFinclStmtAmt
Net Unrealized Gains Invst	$2,243,320	NetUnrealizedGainsInvstAmt
Donated Services And Use Fclts	$122,722	DonatedServicesAndUseFcltsAmt
Revenue Not Reported	$2,366,042	RevenueNotReportedAmt
Revenue Subtotal	$80,380,958	RevenueSubtotalAmt
Investment Expenses Not Incld	$20,339	InvestmentExpensesNotIncldAmt
Other Revenues Not Included	-$4,611,755	OtherRevenuesNotIncludedAmt
Revenue Not Reported Fincl Stmt	-$4,591,416	RevenueNotReportedFinclStmtAmt
Total Revenue Per Form990	$75,789,542	TotalRevenuePerForm990Amt
Tot Expns Etc Audited Fincl Stmt	$78,146,000	TotExpnsEtcAuditedFinclStmtAmt
Donated Services Use Fclts	$122,722	DonatedServicesUseFcltsAmt
Other Expenses Included	$4,633,747	OtherExpensesIncludedAmt
Expenses Not Reported	$4,756,469	ExpensesNotReportedAmt
Expenses Subtotal	$73,389,531	ExpensesSubtotalAmt
Investment Expenses Not Incld2	$20,339	InvestmentExpensesNotIncld2Amt
Expenses Not Rpt Fincl Stmt	$20,339	ExpensesNotRptFinclStmtAmt
Total Expenses Per Form990	$73,409,870	TotalExpensesPerForm990Amt

Supplemental Information Detail SupplementalInformationDetail (8 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
I 5 and 6	The Society does not maintain any donor advised funds. Other Funds consist of the Chicago Board of Trade Endangered Species Fund and the CZS Womens Board Fund. Contributions to these funds come from donors as well as proceeds from fundraising events and investment income. Grants are decided by committees as described in Schedule I. At times, donors who have given money to the fund may also sit on the granting committee but no one donor may decide on the grant awards. All grants awarded must follow the guidelines and processes established by CZS. CZS Board of Trustees has final approval of all Chicago Board of Trade Endangered Species Fund Committee recommended grant awards. CZS Management has final approval of all CZS Womens Board recommended grant awards.
III 1A	Animal Collections, which were acquired through breeding loans, purchases and contributions, are not recognized as assets on the Statement of Financial Position. Costs to acquire collection items are recorded as decreases in unrestricted net assets in the year in which the animals are acquired. Proceeds from deaccessions are reflected as increases in the appropriate net asset class. The Societys animal collection consists of specimens with numerous attributes including taxonomic group, age, sex, relationship and value to other animals, endangered status and breeding potential. The Society retains a record of every animal in a permanent file. An inventory of the collection is prepared annually. Professionally trained keeper staff and population managers provide daily care for the collection and determine population needs.
III 4	The more than 2500 ambassadors of the animal kingdom which make up the CZS collection provide our visitors a rare opportunity to see species from around the globe. The collection, in connection with our education programs, provides CZS the opportunity to teach guests about animals and nature, conservation and other related topics.
V 4	The Societys endowment consists of different funds established to support a variety of CZS programs including conservation and research, education and outreach, care of the animal collection and grounds, and general operations. Additionally, the Society is the designated beneficiary of the interest income on a 1 million endowment established and maintained by the Chicago Community Trust. The CCT maintains variance power over this endowment and, accordingly, the Society has not included it in its financial statements.
VI 1A-E	The Society operates a zoological park on land owned by the Forest Preserve District of Cook County, IL which is provided to the Society at no charge. The land site of the Zoo, accordingly, is not recorded on the Societys financial statements. All park improvements acquired by the Society are legally owned by the District. All park improvements acquired by the Society, including those acquired with District funds, are recorded as park improvements on the Societys financial statements. The amount in Other represents construction in progress on capital assets. Once a capital asset is complete and in use, the total amount for that project is closed out of construction in progress and transferred to park improvements.
X 2	The Society is a not-for-profit corporation and is exempt from tax under the provisions of Internal Revenue Code Section 501c3, except for taxes on unrelated business income. Accounting principles generally accepted in the United States of America require management to evaluate tax positions taken by the Society and recognize a tax liability if the Society has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS or other applicable taxing authorities. Management has analyzed the tax positions taken by the Society, and has concluded that as of December 31, 2017 and 2016, there are no uncertain positions taken or expected to be taken that would require recognition of a liability or disclosure in the financial statements.
XI 4b	Other Adjustments - Cost of Sales of Inventory -3,953,093, fundraising event expense -658,563, raffle expense -100, Rounding and Misc adjustments 1
VII 2d	Other Adjustments - Cost of Sales of Inventory 3,953,093, change in market value of swap agreements 22,253, fundraising event expense 658,563, raffle expense 100, Rounding and Misc adjustments -262

Schedule F IRS990ScheduleF

Field	Value	IRS element (for citing)
Grant Records Maintained	Yes (true)	GrantRecordsMaintainedInd

Account Activities Outside US AccountActivitiesOutsideUSGrp (15 entries)

RegionRegionTxt	Type Of Activities ConductedTypeOfActivitiesConductedTxt	Specific Services ProvidedSpecificServicesProvidedTxt	Region Total ExpendituresRegionTotalExpendituresAmt	EmployeeEmployeeCnt
Europe Including Iceland and Greenland	program services	attend conservation related conferences	$8,303
Europe Including Iceland and Greenland	grants to recipients for fieldwork in region		$5,000
Europe Including Iceland and Greenland	program services	memberships in conservation organization	$12,312
Europe Including Iceland and Greenland	program services	conservation research fieldwork	$624
North America	program services	attend conservation related conferences	$17,322
North America	program serivces	conservation research fieldwork	$6,472
North America	grants to recipients for fieldwork in region		$1,500
Russia and the Neighboring States	grants to recipients for fieldwork in region		$4,716
South America	program services	conservation research fieldwork	$105,932	1
South America	program services	conservation education fieldwork	$2,073
South America	program services	attend conservation related conferences	$1,833
South America	grants to recipients for fieldwork in region		$27,300
South Asia	grants to recipients for fieldwork in region		$5,000
Sub-Saharan Africa	program services	conservation education fieldwork	$523
Sub-Saharan Africa	grants to recipients for fieldwork in region		$18,600

Field	Value	IRS element (for citing)
Subtotal Employees	1	SubtotalEmployeesCnt
Total Employee	1	TotalEmployeeCnt
Subtotal Spent	$217,510	SubtotalSpentAmt
Total Spent	$217,510	TotalSpentAmt

Grants To Org Outside US GrantsToOrgOutsideUSGrp (2 entries)

RegionRegionTxt	Purpose Of GrantPurposeOfGrantTxt	Cash GrantCashGrantAmt	Manner Of Cash DisbursementMannerOfCashDisbursementTxt
Sub-Saharan Africa	conservation research fieldwork	$10,000	wire transfer
South America	conservation research fieldwork	$17,100	check

Field	Value	IRS element (for citing)
Total501c3 Org	2	Total501c3OrgCnt

Foreign Individuals Grants ForeignIndividualsGrantsGrp (5 entries)

Type Of AssistanceTypeOfAssistanceTxt	RegionRegionTxt	RecipientRecipientCnt	Cash GrantCashGrantAmt	Manner Of Cash DisbursementMannerOfCashDisbursementTxt
conservation research fieldwork	South America	2	$6,700	wire transfer
conservation research fieldwork	Russia and the Neighboring States	1	$4,716	wire transfer
conservation research fieldwork	Europe Including Iceland and Greenland	1	$5,000	wire transfer
conservation research fieldwork	North America	1	$1,500	wire transfer
conservation research fieldwork	South Asia	1	$5,000	wire transfer

Field	Value	IRS element (for citing)
Transfer To Foreign Corp	false	TransferToForeignCorpInd
Interest In Foreign Trust	false	InterestInForeignTrustInd
Foreign Corp Ownership	false	ForeignCorpOwnershipInd
Passive Foreign Investmest Co	false	PassiveForeignInvestmestCoInd
Foreign Partnership	false	ForeignPartnershipInd
Boycott Countries	false	BoycottCountriesInd

Supplemental Information Detail SupplementalInformationDetail (2 entries)

Form And Line ReferenceFormAndLineReferenceDesc

ExplanationExplanationTxt

Part I Line 2

The Society awards grants through its Chicago Board of Trade Endangered Species Fund CBT ESF. The grant cycle is 2 times per year. Grant proposals are reviewed by a team of approximately 20 reviewers. All proposals must be endorsed by an IUCN Species Survival Committee or other major, internationally known conservation organization, the AZA/WAZA, or other major zoo organization. For any individuals/organizations who are not US Citizens/entities, the Society checks the most recent OFAC Control List of Specifically Designated and Blocked Persons as well as the Consolidated List established and maintained by the 1267 Committee with respect to Al-Qaida, Osama Bin Laden, and the Taliban and other individuals, groups, undertakings and entities associated with them. Approximately 50,000 is awarded each cycle, usually in amounts of 2000 to 5000 per grant. Final award recommendations are presented to the Executive Committee of the Board of Trustees by the CBT ESF Committee members. Status reports are required from recipients 6 months after the receipt of the funds. Final reports are due 1 year after the receipt of the funds along with a final accounting of the grant funds expended. In addition, other grant funds are given by the Society to major, internationally known conservation organizations in support of their general conservation mission. These contributions are determined by Society management They are approved by the Board either as part of the annual operating budget process or as part of a periodic spending authorization from the Societys Board Designated Conservation Fund.

Part I Line 3, Col F

, Part II Line 1, and Part III All expenditures are reported using the accrual method of accounting.

Schedule G IRS990ScheduleG

Field	Value	IRS element (for citing)
Mail Solicitations	Yes (X)	MailSolicitationsInd
Email Solicitations	Yes (X)	EmailSolicitationsInd
Phone Solicitations	Yes (X)	PhoneSolicitationsInd
In Person Solicitations	Yes (X)	InPersonSolicitationsInd
Solicitation Of Non Govt Grants	Yes (X)	SolicitationOfNonGovtGrantsInd
Solicitation Of Govt Grants	Yes (X)	SolicitationOfGovtGrantsInd
Special Fundraising Events	Yes (X)	SpecialFundraisingEventsInd
Agrmt Prof Fundraising Acty	Yes (true)	AgrmtProfFundraisingActyInd

Fundraiser Activity Info FundraiserActivityInfoGrp

Organization Business Name OrganizationBusinessName

Field	Value	IRS element (for citing)
Business Name Line1	Patricia Hurley and Assoc	BusinessNameLine1Txt

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	205 S Wacker Dr Suite 1400	AddressLine1Txt
City	Chicago	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60606	ZIPCd

Field	Value	IRS element (for citing)
Activity	Consulting-fundraising dinner	ActivityTxt
Fundraiser Control Of Funds	false	FundraiserControlOfFundsInd
Gross Receipts	$1,282,038	GrossReceiptsAmt
Retained By Contractor	$70,046	RetainedByContractorAmt
Net To Organization	$1,211,992	NetToOrganizationAmt

Field	Value	IRS element (for citing)
Total Gross Receipts	$1,282,038	TotalGrossReceiptsAmt
Total Retained By Contractors	$70,046	TotalRetainedByContractorsAmt
Total Net To Organization	$1,211,992	TotalNetToOrganizationAmt
Licensed States	FL	LicensedStatesCd
Licensed States	IL	LicensedStatesCd
Licensed States	IN	LicensedStatesCd
Licensed States	WI	LicensedStatesCd

Fundraising Event Information FundraisingEventInformationGrp

Field	Value	IRS element (for citing)
Event1	Whirl Gala	Event1Nm
Gross Receipts Event1	$1,282,038	GrossReceiptsEvent1Amt
Charitable Contri Event1	$1,116,698	CharitableContriEvent1Amt
Gross Revenue Event1	$165,340	GrossRevenueEvent1Amt
Non Cash Prizes Event1	$7,178	NonCashPrizesEvent1Amt
Rent Facility Costs Event1	$219,188	RentFacilityCostsEvent1Amt
Food And Beverage Event1	$83,993	FoodAndBeverageEvent1Amt
Entertainment Event1	$10,000	EntertainmentEvent1Amt
Other Direct Expenses Event1	$199,246	OtherDirectExpensesEvent1Amt
Event2	Conservation Awards Dinner	Event2Nm
Gross Receipts Event2	$443,517	GrossReceiptsEvent2Amt
Charitable Contri Event2	$417,607	CharitableContriEvent2Amt
Gross Revenue Event2	$25,910	GrossRevenueEvent2Amt
Non Cash Prizes Event2	$1,297	NonCashPrizesEvent2Amt
Rent Facility Costs Event2	$7,994	RentFacilityCostsEvent2Amt
Food And Beverage Event2	$40,898	FoodAndBeverageEvent2Amt
Entertainment Event2	$500	EntertainmentEvent2Amt
Other Direct Expenses Event2	$20,810	OtherDirectExpensesEvent2Amt
Other Events Total	3	OtherEventsTotalCnt
Gross Receipts Other Events	$216,101	GrossReceiptsOtherEventsAmt
Charitable Contri Other Events	$76,925	CharitableContriOtherEventsAmt
Gross Revenue Other Events	$139,176	GrossRevenueOtherEventsAmt
Rent Fclty Costs Other Events	$2,019	RentFcltyCostsOtherEventsAmt
Food And Beverage Other Events	$23,744	FoodAndBeverageOtherEventsAmt
Oth Direct Expnss Other Events	$84,727	OthDirectExpnssOtherEventsAmt
Gross Receipts Total	$1,941,656	GrossReceiptsTotalAmt
Charitable Contributions Tot	$1,611,230	CharitableContributionsTotAmt
Gross Revenue Total Events	$330,426	GrossRevenueTotalEventsAmt
Non Cash Prizes Total Events	$8,475	NonCashPrizesTotalEventsAmt
Rent Fclty Costs Total Events	$229,201	RentFcltyCostsTotalEventsAmt
Food And Beverage Total Events	$148,635	FoodAndBeverageTotalEventsAmt
Entertainment Total Events	$10,500	EntertainmentTotalEventsAmt
Oth Direct Expnss Total Events	$304,783	OthDirectExpnssTotalEventsAmt
Direct Expense Summary Events	$701,594	DirectExpenseSummaryEventsAmt
Net Income Summary	-$371,168	NetIncomeSummaryAmt

Gaming Information GamingInformationGrp

Field	Value	IRS element (for citing)
Gross Revenue Other Gaming	$51,801	GrossRevenueOtherGamingAmt
Non Cash Prizes Other Gaming	$15,052	NonCashPrizesOtherGamingAmt
Oth Direct Expnss Other Gaming	$100	OthDirectExpnssOtherGamingAmt
Volunteer Labor Other Gaming	Yes (true)	VolunteerLaborOtherGamingInd
Volunteer Labor Other Gaming	0.35000	VolunteerLaborOtherGamingPct
Gross Revenue Total Gaming	$51,801	GrossRevenueTotalGamingAmt
Non Cash Prizes Total Gaming	$15,052	NonCashPrizesTotalGamingAmt
Oth Direct Expnss Total Gaming	$100	OthDirectExpnssTotalGamingAmt
Direct Expense Summary Gaming	$15,152	DirectExpenseSummaryGamingAmt
Net Gaming Income Summary	$36,649	NetGamingIncomeSummaryAmt

Field	Value	IRS element (for citing)
States Where Gaming Conducted	IL	StatesWhereGamingConductedCd
Licensed	Yes (true)	LicensedInd
License Suspended Etc	false	LicenseSuspendedEtcInd
Gaming With Nonmembers	Yes (true)	GamingWithNonmembersInd
Member Of Other Entity	false	MemberOfOtherEntityInd
Gaming Own Facility	1.00000	GamingOwnFacilityPct
Individual With Books	H Bilcer Mgr FinOper Analysis	IndividualWithBooksNm

Persons With Books US Address PersonsWithBooksUSAddress

Field	Value	IRS element (for citing)
Address Line1	3300 Golf Rd	AddressLine1Txt
City	Brookfield	CityNm
State Abbreviation	IL	StateAbbreviationCd
ZIP	60513	ZIPCd

Field	Value	IRS element (for citing)
Cntrct With3rd Prty For Game Rev	false	CntrctWith3rdPrtyForGameRevInd
Gaming Manager Person	C Zeigler	GamingManagerPersonNm
Gaming Manager Compensation	$984	GamingManagerCompensationAmt
Gaming Manager Services Prov	As Chief Advancement Officer, Ms. Zeigler spent a small amt of her time supervising raffles	GamingManagerServicesProvTxt
Gaming Manager Is Employee	Yes (X)	GamingManagerIsEmployeeInd
Charitable Distribution Rqr	false	CharitableDistributionRqrInd

Schedule I IRS990ScheduleI

Field	Value	IRS element (for citing)
Grant Records Maintained	Yes (true)	GrantRecordsMaintainedInd

Recipient Table RecipientTable (7 entries)

Address Line1USAddress/AddressLine1Txt	CityUSAddress/CityNm	State AbbreviationUSAddress/StateAbbreviationCd	ZIPUSAddress/ZIPCd	Recipient EINRecipientEIN	IRC SectionIRCSectionDesc	Cash GrantCashGrantAmt	Purpose Of GrantPurposeOfGrantTxt
American Humane Association
1400 16th St NW Suite 360	Washington DC	DC	20036	840432950	501c3	$20,000	general operating support
Amphibian Ark
12101 Johnny Cake Ridge Rd	Apple Valley	MN	55124	461453272	501c3	$6,000	general operating support
Association of Zoos and Aquariums
8403 Colesvill Rd Suite 710	Silver Springs	MD	20910	550526930	501c3	$25,000	conservation research
Conservation Breeding Specialist Group-Global Conservation Network
12101 Johnny CakeRidge Rd	Apple Valley	MN	55124	411719362	501c3	$15,000	general operating support
Global Wildlife Conservation
PO Box 129	Austin	TX	78767	262887967	501c3	$35,000	general operating support
International Elephant Foundation
PO Box 366	Azle	TX	76098	752815706	501c3	$10,000	general operating support
Vital Ground Foundation
Bldg 2-T Fort Missoula Rd	Missoula	MT	59804	870483446	501c3	$20,000	general operating support

Field	Value	IRS element (for citing)
Total501c3 Org	7	Total501c3OrgCnt

Grants Other Asst To Indiv In US GrantsOtherAsstToIndivInUSGrp (3 entries)

Grant TypeGrantTypeTxt	RecipientRecipientCnt	Cash GrantCashGrantAmt
Educ. Scholarship for Conservation Education	5	$12,500
Conservation Leadership Award	1	$5,000
Conservation Hero Award	1	$1,500

Supplemental Information Detail SupplementalInformationDetail

Field	Value	IRS element (for citing)
Form And Line Reference	Part I Line 2	FormAndLineReferenceDesc
Explanation	CZS awards grants and assistance through a variety of programs. For awards under the CBT ESF program, as well as general contributions to major conservation organizations, see details in Schedule F, part V. CZS also provides grants and assistance through its educational scholarship programs and bus stipends programs. CZS maintains records to substantiate amounts, elegibility and selection criteria. Procedures are in place to monitor grants to ensure they are used for proper purposes including, where applicable, periodic reporting by the grantee.	ExplanationTxt

Schedule J IRS990ScheduleJ

Field	Value	IRS element (for citing)
Idemnification Gross Up Pmts	Yes (X)	IdemnificationGrossUpPmtsInd
Housing Allowance Or Residence	Yes (X)	HousingAllowanceOrResidenceInd
Written Policy Ref T And E Expnss	Yes (true)	WrittenPolicyRefTAndEExpnssInd
Substantiation Required	Yes (true)	SubstantiationRequiredInd
Compensation Committee	Yes (X)	CompensationCommitteeInd
Independent Consultant	Yes (X)	IndependentConsultantInd
Form990 Of Other Organizations	Yes (X)	Form990OfOtherOrganizationsInd
Compensation Survey	Yes (X)	CompensationSurveyInd
Board Or Committee Approval	Yes (X)	BoardOrCommitteeApprovalInd
Severance Payment	Yes (true)	SeverancePaymentInd
Supplemental Nonqual Rtr Plan	Yes (true)	SupplementalNonqualRtrPlanInd
Equity Based Comp Arrngm	false	EquityBasedCompArrngmInd
Comp Based On Revenue Of Flng Org	false	CompBasedOnRevenueOfFlngOrgInd
Comp Bsd On Rev Related Orgs	false	CompBsdOnRevRelatedOrgsInd
Comp Bsd Net Earns Flng Org	false	CompBsdNetEarnsFlngOrgInd
Comp Bsd Net Earns Rltd Orgs	false	CompBsdNetEarnsRltdOrgsInd
Any Non Fixed Payments	Yes (true)	AnyNonFixedPaymentsInd
Initial Contract Exception	false	InitialContractExceptionInd

Rltd Org Officer Trst Key Empl RltdOrgOfficerTrstKeyEmplGrp (10 entries)

TitleTitleTxt	Base Compensation Filing OrgBaseCompensationFilingOrgAmt	Other Compensation Filing OrgOtherCompensationFilingOrgAmt	Deferred Compensation Flng OrgDeferredCompensationFlngOrgAmt	Nontaxable Benefits Filing OrgNontaxableBenefitsFilingOrgAmt	Total Compensation Filing OrgTotalCompensationFilingOrgAmt	Comp Report Prior990 Filing OrgCompReportPrior990FilingOrgAmt	Bonus Filing OrganizationBonusFilingOrganizationAmount
Stuart D Strahl PhD
President and CEO	$453,358	$110,823	$54,002	$24,755	$642,938	$59,862
Richard G Gamble
Chief Operating Officer/Exec. VP	$302,680	$1,270	$7,200	$21,948	$353,098		$20,000
Cynthia W Zeigler
Chief Advancement Officer	$292,388	$3,351	$7,714	$10,823	$319,276		$5,000
Christopher Jabin
Sr. VP Development	$178,633	$62,634	$6,134	$17,154	$264,555
Sarah Breen-Bartecki
Interim Sr VP Conserv. Educ. Community	$206,384	$1,270	$5,400	$7,572	$220,626
Frank W Zeigler
Sr. VP Animal Programs	$196,261	$5,243	$5,684	$9,338	$216,526
Michael Owens
VP Information Technology	$174,487	$1,979	$5,862	$8,803	$191,131
Sandra L Dornhecker
VP Human Resources	$170,565	$2,271	$2,765	$15,618	$191,219
Jerome E Johnston
VP Guest Services Operations	$161,254	$4,801	$4,312	$7,369	$177,736
Leah Rippe
VP Marketing Communications	$156,505	$1,637		$19,249	$177,391

Supplemental Information Detail SupplementalInformationDetail (4 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part I Line 1a	As provided for in the executive employment agreement approved by the Board of Trustees, the President received a housing allowance and a gross up payment equivalent to the tax obligation for the value of the Society provided life insurance. Both were treated as taxable compensation to the President.
Part I Line 4a	As provided for in the Severance Agreement with the Sr. VP Development related to the elimination of the position, he received a severance payment of 40,329.
Part I Line 4b	As provided for in the CZS Deferred Compensation Plan and as approved by the Board of Trustees, a deferred contribution plus interest credit was made to the Plan on behalf of the President in the amount of 45,902. Also, as provided for in the CZS Deferred Compensation Plan, a payout was made to the President of previously deferred compensation in the amount of 59,862.
Part II Line 7	As indicated in Schedule J part II, certain individuals received bonuses based on performance and the financial results of the organization. These bonuses are approved by the Board of Trustees.

Schedule K IRS990ScheduleK

Tax Exempt Bonds Issues TaxExemptBondsIssuesGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd

Issuer Name IssuerName

Field	Value	IRS element (for citing)
Business Name Line1	Village of Brookfield Cook County IL	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Bond Issuer EIN	366005807	BondIssuerEIN
CUSIP	112732AAO	CUSIPNum
Bond Issued	2008-06-18	BondIssuedDt
Issue Price	$39,850,000	IssuePriceAmt
Purpose	Construction and renovation of certain buildings and exhibits	PurposeDesc
Defeased	false	DefeasedInd
On Behalf Of Issuer	false	OnBehalfOfIssuerInd
Pool Financing	false	PoolFinancingInd

Tax Exempt Bonds Proceeds TaxExemptBondsProceedsGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Retired	$9,130,000	RetiredAmt
Total Proceeds	$39,850,000	TotalProceedsAmt
Capitalized Interest	$595,445	CapitalizedInterestAmt
Issuance Costs From Proceeds	$296,598	IssuanceCostsFromProceedsAmt
Capital Expenditures	$30,539,559	CapitalExpendituresAmt
Substantial Completion	2010	SubstantialCompletionYr
Current Refunding	false	CurrentRefundingInd
Advance Refunding	false	AdvanceRefundingInd
Final Allocation Made	Yes (true)	FinalAllocationMadeInd
Adequate Books And Rec Maint	Yes (true)	AdequateBooksAndRecMaintInd

Tax Exempt Bonds Private Bus Use TaxExemptBondsPrivateBusUseGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Owning Bond Financed Property	false	OwningBondFinancedPropertyInd
Any Lease Arrangements	false	AnyLeaseArrangementsInd
Mgmt Contract Bond Fincd Prop	false	MgmtContractBondFincdPropInd
Any Research Agreements	false	AnyResearchAgreementsInd
Private Bus Concerning UBI	0.01280	PrivateBusConcerningUBIPct
Total Private Business Use	0.01280	TotalPrivateBusinessUsePct
Bond Iss Meet Prvt Sec Pymt Test	false	BondIssMeetPrvtSecPymtTestInd
Change In Use Bond Financed Prop	false	ChangeInUseBondFinancedPropInd
Procs Nonqualified Bond Remdtd	Yes (true)	ProcsNonqualifiedBondRemdtdInd

Tax Exempt Bonds Arbitrage TaxExemptBondsArbitrageGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Form8038 T Filed	false	Form8038TFiledInd
No Rebate Due	Yes (true)	NoRebateDueInd
Variable Rate Issue	Yes (true)	VariableRateIssueInd
Hedge Identified In Bks And Rec	Yes (true)	HedgeIdentifiedInBksAndRecInd

Hedge Provider Name HedgeProviderName

Field	Value	IRS element (for citing)
Business Name Line1	The Northern Trust co	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Term Of Hedge	0000000010.000000000000	TermOfHedgePct
Superintegrated Hedge	false	SuperintegratedHedgeInd
Hedge Terminated	false	HedgeTerminatedInd
Gross Proceeds Invested In GIC	false	GrossProceedsInvestedInGICInd
Gross Proceeds Invested	false	GrossProceedsInvestedInd
Written Proc To Monitor Reqs	Yes (true)	WrittenProcToMonitorReqsInd

Procedures Corrective Action ProceduresCorrectiveActionGrp

Field	Value	IRS element (for citing)
Bond Reference	A	BondReferenceCd
Procedures Corrective Action	Yes (true)	ProceduresCorrectiveActionInd

Supplemental Information Detail SupplementalInformationDetail (2 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part II Line 11A	Some proceeds of the bonds were used to retire a portion of the bonds as reported in Part II, Line 1A
Part IV Line 2c	Column A The rebate calculation was performed by an independent rebate consultant in March 2013 indicating no rebate was due and advising that as long as all assumptions remained true it was no longer necessary to compute excess with respect to these bonds.

Schedule L IRS990ScheduleL

Bus Tr Involve Interested Prsn BusTrInvolveInterestedPrsnGrp (2 entries)

Relationship DescriptionRelationshipDescriptionTxt	TransactionTransactionAmt	TransactionTransactionDesc	Sharing Of RevenuesSharingOfRevenuesInd
Cynthia W Zeigler
Family Member of Key Employee	$319,276	employment	false
Frank W Zeigler
Family Member of Key Employee	$216,526	employment	false

Supplemental Information Detail SupplementalInformationDetail (2 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part IV Line 1	During 2017, Cynthia W. Zeigler was employed as Chief Advancement Officer. She is a family member of key employee Frank W. Zeigler. Her employment follows the Societys established recruiting, hiring and compensation policies.
Part IV Line 2	During 2017, Frank W. Zeigler was employed as Sr. VP Animal Programs. He is a family member of key employee Cynthia W. Zeigler. His employment follows the Societys established recruiting, hiring and compensation policies.

Schedule M IRS990ScheduleM

Books And Publications BooksAndPublicationsGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Noncash Contributions Rpt F990	$2,300	NoncashContributionsRptF990Amt
Method Of Determining Revenues	cost or selling price	MethodOfDeterminingRevenuesTxt

Securities Publicly Traded SecuritiesPubliclyTradedGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	40	ContributionCnt
Noncash Contributions Rpt F990	$763,135	NoncashContributionsRptF990Amt
Method Of Determining Revenues	price of stock on gift date	MethodOfDeterminingRevenuesTxt

Food Inventory FoodInventoryGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	7	ContributionCnt
Noncash Contributions Rpt F990	$18,076	NoncashContributionsRptF990Amt
Method Of Determining Revenues	cost or selling price	MethodOfDeterminingRevenuesTxt

Scientific Specimens ScientificSpecimensGrp

Field	Value	IRS element (for citing)
Non Cash Checkbox	Yes (X)	NonCashCheckboxInd
Contribution	53	ContributionCnt

Other Non Cash Contri Table OtherNonCashContriTableGrp (4 entries)

Non Cash CheckboxNonCashCheckboxInd	DescDesc	ContributionContributionCnt	Noncash Contributions Rpt F990NoncashContributionsRptF990Amt	Method Of Determining RevenuesMethodOfDeterminingRevenuesTxt
Yes (X)	Operating Supplies/Equipment	68	$1,108,442	cost or selling price
Yes (X)	Charity fundraising supplies	9	$19,794	cost or selling price
Yes (X)	Charity auction items	44	$43,031	cost or selling price
Yes (X)	Charity raffle items	10	$15,052	cost or selling price

Field	Value	IRS element (for citing)
Any Property That Must Be Held	false	AnyPropertyThatMustBeHeldInd
Review Process Unusual NC Gifts	Yes (true)	ReviewProcessUnusualNCGiftsInd
Third Parties Used	Yes (true)	ThirdPartiesUsedInd

Supplemental Information Detail SupplementalInformationDetail (3 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Part I Line 32b	The Society has an agreement with IDonate to process certain non cash donations on behalf of the Society. Donors donate their items to IDonate Foundation/Servant Foundation, a 501c3 organization, who sells the items, retains a commission and issues a cash grant to the Society for the remainder.
Part I Line 33	Securities Current year contributions of stock which represent payments on pledges recorded as contribution in a previous year are not included in the revenue shown on Form 990, Part VIII, Line 1g
Part I Line 33	Collection Items/Scientific Specimens A zero dollar amount was reported on Form 990, Part VIII, Line 1g because the Society does not capitalize its collection, as allowed under SFAS 116.

Schedule O IRS990ScheduleO

Supplemental Information Detail SupplementalInformationDetail (15 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
Form 990, Part III, Line 4d	Program Service Expenses 7,476,000, Grants and allocations 236,509, Revenue 767,384 Center for Conservation Leadership CCL Through its many conservation and education programs, CZS communicates with others to engender in them a sense of ownership about living harmoniously with nature and helping save endangered species. Education specialists, curators, graphic and exhibit designers, photographers and many others contribute to sharing this information with visitors. As well as reaching the 2.2 million visitors, CZS engages would be conservationists outside of the Zoo including classrooms of school children, teachers and community leaders. Additionally through field programs, CZS supports efforts to protect and restore populations of threatened species in other parts of the world. The CCL strengthens the bridge between education and conservation, between field research and the animals in our care.
Form 990, Part III, Line 4d	Program Service Expenses 3,530,000, Grants and allocations 0, Revenue 6,206,912 Admissions and Parking In the course of a year, over 2.2 million visitors enjoy the experience of seeing and learning about the animals of the world. Each individual that enters Brookfield Zoos gates represents an opportunity a chance to introduce representatives of the wild world, to convey our intertwined connections to the animal kingdom, and to encourage positive change in the world. The Brookfield Zoo is open every day of the year. Admission is free to the general public 52 days each year and at all times to Illinois school groups and to military personnel. On certain days throughout the summer extended hours are offered to be more accessible to a more diverse audience.
Form 990, Part III, Line 4d	Program Service Expenses 1,537,000, Grants and allocations 0, Revenue 4,888,812 Membership The membership program services our over 115,000 member households, providing them with the opportunity to participate in the conservation and educational efforts of CZS. Member services fulfills new and renewing memberships, answers member questions at locations throughout the park and via telephone and provides educational member Animail updates via email. Members receive unlimited free admission, free or discounted parking and in-park attraction admissions and discounts on food and educational classes.
Form 990, Part III, Line 4d	Program Service Expenses 4,287,000, Grants and allocations 0, Revenue 1,065,428 Marketing and Public Relations CZSs marketing and public relations draws thousands of visitors throughout the year to discover, celebrate and help conserve natures gifts. Through production of seasonal themed events such as Summer Nights, Holiday Magic and Boo at the Zoo, CZS attracts attendance and exposes a wider audience to our mission. Through celebratory events including Freeze Day, Party for the Planet, World Giraffe Day, Animal Enrichment Day and Animal Awareness Weekends, CZS inspires conservation leadership. Through outreach programming to local communities and organizations, CZS reaches out to those who may not have an opportunity to visit the zoo otherwise. Additionally, CZS produces two complementary websites CZS.org is devoted to in-depth discussion of conservation issues designed to inspire conservation leadership in our guests brookfieldzoo.org acquaints future and past visitors with the many exhibits within the Zoo, upcoming special events and visit planning tools.
Form 990, Part III, Line 4d	Program Service Expenses 8,888,000, Grants and allocations 0, Revenue 0 Depreciation Depreciation on the Zoos 275 million in buildings and equipment, including animal exhibits, animal care facilities, education spaces, shops and restaurants.
Form 990, Part VI, Section A, Line 1A	The fiscal, general oversight, and policies of the Society are vested in a Board of not more than 58 Trustees. As of December 31, 2017, there were 44 voting Trustess. The elected Officers of the Board, the chairs of the standing committees and such other Trustees as may be appointed by the Chairman constitute the Executive Committee. The Executive Committee has the power to transact all regular business of the Society during the period between the regular Board meetings.
Form 990, Part VI, Section A, Line 2	Cindy Zeigler, Key Employee and Frank Zeigler, Key Employee - Family Relationship.
Form 990, Part VI, Section A, Line 6	The membership of the Society is composed of up to 250 Governing Members. Up to 55 of the 58 Board of Trustees are elected by the Governing Members at their annual meeting. Governing Members are also eligible for appointment by the Societys Chairman to serve on Board committees other than the Exectuive Committee. Governing Members are chosen by the Nominating Committee of the Board of Trustees and voted on by the full Board of Trustees.
Form 990, Part VI, Section A, Line 7A	The membership of the Society is composed of up to 250 Governing Members. Up to 55 of the 58 Board of Trustees are elected by the Governing Members at their annual meeting. Governing Members are also eligible for appointment by the Societys Chairman to serve on the Board committees other than the Executive Committee. Governing Members are chosen by the Nominating and Govenance Committee of the Board of Trustees and voted on by the full Board of Trustees.
Form 990, Part VI, Section B, Line 11B	The IRS Form 990 is prepared by Societys management and reviewed and signed by the Societys tax advisor. The Form 990 is also reviewed by the Audit Committee of the Board of Trustees. A copy of the entire final version of the form is also made available to the Board of Trustees prior to filing with the IRS.
Form 990, Part VI, Section B, Line 12C	Annually, a conflict of interest form is sent out to all members of the Board of Trustess, Key Employees and any employee with purchasing authority. The form covers potential conflicts through financial interests, use of Society services, priviledged information and representation of Society interests. It also covers specific disclosures required by the IRS Form 990 and the Illinois AG990IL. Board of Trustees responses are reviewed by the Secretary of the Board and the Sr. VP Finance who together determine if a conflict exists. Employee responses are reviewed by the VP Human Resources and the Sr. VP Finance. Any conflicts are addressed to ensure that all internal procedures are followed for any transactions with that individual and that all items requiring disclosure are properly noted. Any Board members with a conflict must abstain from voting on decisions involving the transaction in question. Any transactions entered into with interested parties follow the Societys established procurement policies and are provided at rates competitive with market rates.
Form 990, Part VI, Section B, Line 15A and 15B	The Societys policy for approval of compensation arrangements with officers and certain senior employees requires review and approval of the compensation arrangement by the Executive Committee of the Board, excluding anyone who is related to or under the control of the person involved in the arrangement. The Committee relies on appropriate comparability data which indicates the types and levels of similar compensation and benefit packages for similar positions provided by similar organizations. The Committee documents the basis for its determination of the reasonableness of compensation. This process is done annually for the President, Sr. VP of Operatons, Sr. VP of Finance and the Chief Advancement Officer any year where there is an increase in compensation.
Form 990, Part VI, Section C, Line 19	Governing documents are available through applicable governmental agencies the conflict of interest policy and financial statements are available upon written request to the Society.
Form 990, Part XI, Line 9	Other Changes in net assets or fund balances Changes in Post Retirement Benefits not yet recognized in operations -280,000 change in market value of swap agreements -22,253 rounding and other 261.
Form 990, Part VI, Section A, Line 4	At the September 19, 2017 Board of Trustees meeting the Societys by-laws, last updated in 2009, were revised. Several Standing Committees were reorganized and renamed to be more in line with the current strategic priorities of the Board. Changes included removing the standing committees of Conservation, Research and Education, Governmental Affairs and Guest Experience/Marketing and establishing the new standing committees of Ceneters of Excellence, Community Engagement Social Innovation, Master Site Planning and Strategic Business Model. There were no significant changes to the standing committees of Finance and Investment, Audit and Controls, Nominating and Governance and Development. Additional changes were made to the Governing Members section to add consistency.