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Census › South Dakota › Lake County

Lake County, SD

People
Population10,972B01003
Population, 2020 census11,059P1
Median age43.8B01002
Under 1819.6%B01001
65 and over24.3%B01001
Households4,716B11001
Foreign born3.7%B05002
Money
Median household income$76,808B19013
Median family income$97,647B19113
Per capita income$45,963B19301
Poverty rate8.4%B17001
Unemployment rate3.0%B23025
Civilian labor force5,890B23025
Mean commute (minutes)14.9B08013
Education
Bachelor's degree or higher34.6%B15003
Housing
Housing units5,797B25001
Owner-occupied73.8%B25003
Renters26.2%B25003
Median home value$247,600B25077
Median gross rent$947B25064
Race and ethnicity
White, not Hispanic88.8%B03002
Black0.7%B03002
Hispanic or Latino5.3%B03002
Asian0.7%B03002
American Indian and Alaska Native2.5%B03002

Figures from the 2020-2024 American Community Survey five-year estimates (table codes link to the same table for this area at data.census.gov) and the 2020 census (P1), via IPUMS NHGIS. Estimates for small areas carry wide margins of error; a tract's figures describe its residents, not any one organization.

Against the state: median household income here is 102% of South Dakota's ($75,081); poverty 8.4% against 11.9%; 1.2% of the state's people live here.

Census tracts

Census Tract 9601: 2,483Census Tract 9602.01: 2,237Census Tract 9602.02: 3,941Census Tract 9603: 2,311MadisonLake MadisonRamonaBrant Lake SouthChesterWentworthBrant LakeNundaWinfredRustic Acres ColonyGraceville ColonyZIP 57042: 123 nonprofits, $459,000,279ZIP 57054: 12 nonprofits, $110,030ZIP 57075: 10 nonprofits, $6,664ZIP 57050: 7 nonprofitsZIP 57016: 7 nonprofits, $2,843ZIP 57076: 6 nonprofitsPopulation (ACS 2020-2024)up to 2,2372,237 to 2,3112,311 to 2,483over 2,483nonprofits (circle size: how many)

Click an area for its page. Circles are FURP records at their ZIP code's center point, sized by how many. Download this map's areas with their census figures: CSV (center points) · GeoJSON (outlines), ready for Datawrapper, Mapshaper or Google My Maps. Outlines: Census TIGER/Line 2026, simplified.

Places in the county

FURP records in Lake County, SD

RecordsHow manyTotalBiggest
Nonprofits165$459,119,816 revenue (latest return)EAST RIVER ELECTRIC POWER COOPERATIVE INC ($371,444,036)
Nonprofit contractors13$36,179,669 paid by nonprofitsMay Construction Inc ($19,431,723)
Colleges and schools13,508 enrollmentDakota State University (3,508)
Form D issuers3$1,050,000 amount soldWoodbury Estates, LLC ($1,000,000)
Political committees1CRABTREE FOR CONGRESS
Form 5500 plan sponsors5060 plansMADISON COMMUNITY HOSPITAL (5)
Open Payments recipients23$32,803 industry paymentsMICHAEL J. ADLER ($27,840)
Patent and trademark owners3381 patents and marksGlobal Polymer Industries, Inc. (9)
Federal award recipients1,270$297,080,720 federal awardsDAKOTA STATE UNIVERSITY ($103,680,189)
State business registrations53PETER ROBINSON MD INC

Cross-reference: 165 nonprofits for 10,972 residents is 150.4 per 10,000 people; their latest-year revenue of $459,119,816 is $41,845 per resident, 126.7% of all household income here (households at the median income).

Highest-paid people on nonprofit returns here

#NameTitleOrganizationPayYearTimes the median household income
1TOM BOYKOCEO/GENERAL MANAGEREAST RIVER ELECTRIC POWER COOPERATIVE INC$842,681202111.0x
2ROBERT SAHRCEO/GENERAL MANAGEREAST RIVER ELECTRIC POWER COOPERATIVE INC$834,317202410.9x
3THOMAS BOYKOCEO/GENERAL MANAGER (END 07/2022)EAST RIVER ELECTRIC POWER COOPERATIVE INC$816,453202210.6x
4ROBERT SUMMERERSURGEONMADISON COMMUNITY HOSPITAL$612,01620248.0x
5ANDREA THOMPSONCEODAKOTA STATE UNIVERSITY APPLIED RESEARCH CORPORATION$600,00020247.8x
6LAURA HOEFERTMD OF FAMILY MEDICINEMADISON COMMUNITY HOSPITAL$537,29020247.0x
7BENJAMIN LISCANOMD OF FAMILY MEDICINEMADISON COMMUNITY HOSPITAL$529,81920246.9x
8JUSTIN CLEMMD OF FAMILY MEDICINEMADISON COMMUNITY HOSPITAL$497,44520246.5x
9ELIZABETH AVERYCHROEAST RIVER ELECTRIC POWER COOPERATIVE INC$482,68720246.3x
10SCOTT SHEWEYCFOEAST RIVER ELECTRIC POWER COOPERATIVE INC$436,76520245.7x

Each person's latest year on a 990 at a nonprofit placed here (reported pay including related organizations and other compensation); people paid under $50,000 are left out. The median household income here is $76,808.

Nonprofits: biggest by revenue (latest return)

Nonprofit contractors: biggest by paid by nonprofits

Colleges and schools: biggest by enrollment

Form D issuers: biggest by amount sold

Political committees

Form 5500 plan sponsors: biggest by plans

Open Payments recipients: biggest by industry payments

Patent and trademark owners: biggest by patents and marks

Federal award recipients: biggest by federal awards

All 4 tracts

Every tract with its figures is in the CSV and GeoJSON downloads.

TractPopulationMedian household incomePoverty rateMedian age
Census Tract 9602.023,941$79,3424.7%36.0
Census Tract 96012,483$95,3139.9%43.0
Census Tract 96032,311$105,5454.4%56.6
Census Tract 9602.012,237$44,32717.1%54.0

Census figures are from IPUMS NHGIS: the American Community Survey 2020-2024 five-year estimates (ACS table codes shown with each figure) and the 2020 decennial census (Demographic and Housing Characteristics), by state, county, place and census tract. FURP records are placed by ZIP code (the Census Bureau's 2020 ZCTA-to-county and ZCTA-to-tract relationship files: the county or tract holding most of the ZIP's land) and by city name (Census place names, normalized), so a record's tract is its ZIP's main tract, not its street's. Cite: Jonathan Schroeder, David Van Riper, Steven Manson, Grace Cooper, Zachary Krause, Tracy Kugler, Tsu Zhu, and Steven Ruggles. IPUMS National Historical Geographic Information System: Version 21.0 [dataset]. Minneapolis, MN: IPUMS. 2026. http://doi.org/10.18128/D050.V21.0