Spink County, South Dakota Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 29th-largest in South Dakota

The population of Spink County, South Dakota is 6,283 as of the 2023 American Community Survey, making it the 29th-largest county in South Dakota. The median household income is $73,011, the median home value is $117,400, and the median age is 45.1.

The population of Spink County has declined 4.9% since 2010 (6,421 → 6,108), a -0.36% annualized rate.

Spink County within South Dakota · Source: US Census TIGER/Line via us-atlas

6,283

Population

-0.36%

Annual growth

People / sq mi

$73,011

Median Income

$117,400

Median Home Value

Spink County covers 1,503 sq mi of land at 4.2 people per square mile.

About Spink County, SD

The poverty rate is what most separates Spink County from the typical county: 4.3% of residents live below the federal poverty line, against 12.4% nationally. Spink County is a county in South Dakota with a population of 6,283. It ranks #29 among counties in South Dakota by population.

Median household income is $73,011, below the US median of $78,538. Hardship is rare relative to US counties: a poverty rate of just 4.3%, below the national 12.4%. Homes are comparatively cheap — a median value of $117,400, with typical rent around $691.

About 27.1% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. Remote work is on the higher side at 13.6%, close to the national 14.0%, and the average commute runs about 17 minutes each way.

Spink County Population History (2010-2024)

The county of Spink County had a population of 6,421 in 2010 and 6,108 in 2024, a -4.9% growth over 14 years. The peak was 6,736 in 2012. Average annual growth rate: -0.35%.

Spink County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

6,108

Population (2024)

6,421

Population (2010)

6,736

Peak (2012)

-0.35%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	6,421	-	-	estimate
2011	6,562	+141	+2.20%	estimate
2012	6,736	+174	+2.65%	estimate
2013	6,663	-73	-1.08%	estimate
2014	6,655	-8	-0.12%	estimate
2015	6,555	-100	-1.50%	estimate
2016	6,483	-72	-1.10%	estimate
2017	6,516	+33	+0.51%	estimate
2018	6,469	-47	-0.72%	estimate
2019	6,401	-68	-1.05%	estimate
2020	6,342	-59	-0.92%	estimate
2021	6,265	-77	-1.21%	estimate
2022	6,232	-33	-0.53%	estimate
2023	6,149	-83	-1.33%	estimate
2024	6,108	-41	-0.67%	estimate

Race & Ethnicity

White	94.6%
Black or African American	0.9%
Asian	0.0%
Hispanic or Latino (any race)	0.5%
Two or More Races	0.0%

Age & Sex

45.1

Median Age

50.4%

Female

49.6%

Male

23.9%

Age 65+

Age Distribution

Under 5

6.6%

5–9

6.5%

10–14

5.2%

15–19

5.8%

20–24

4.2%

25–34

10.6%

35–44

11.0%

45–54

10.4%

55–59

9.1%

60–64

6.8%

65–74

12.6%

75–84

7.3%

85+

4.0%

Children (under 15): 18.3% · Seniors (65+): 23.9%

Income & Poverty

Median household income	$73,011+$590 vs state
Mean household income	$92,183
Per-capita income	$37,347
Poverty rate	4.3%-3.1% vs state
Unemployment rate	1.0%
Employment-to-population	59.2%

Top Industries by Employment

Professional & business services

22.7%

Agriculture

21.1%

Public administration

7.8%

Construction

7.6%

Arts, entertainment & food

7.0%

Finance & real estate

5.4%

Manufacturing

5.1%

Education & health care

4.3%

The largest employment sector in Spink County is professional & business services, accounting for 22.7% of workers.

How residents commute

0.0%

Drive alone

8.5%

Carpool

66.4%

Public transit

13.6%

Work from home

16.7 min

Avg commute

Housing

$117,400$-119,400 vs state

Median home value

$691

Median rent

75.1%

Homeownership rate

2,989

Total housing units

82.1%

Occupied

17.9%

Vacant

24.9%

Renter-occupied

Social & access

92.2%

With health insurance

92.3%

With broadband internet

18.2%

Foreign-born

7.0%

Veterans (18+)

11.4%

With a disability

95.0%

Speak language other than English at home

Education

92.0%

High School+

27.1%

Bachelor's+

Largest cities in South Dakota

Sioux Falls (197,642)Rapid City (76,836)Aberdeen (28,297)Brookings (23,710)Watertown (22,859)Mitchell (15,637)Yankton (15,501)Huron (14,347)Pierre (14,008)Spearfish (12,551)All South Dakota cities →

Other counties in South Dakota

Minnehaha County (200,689)Pennington County (112,081)Lincoln County (68,286)Brown County (38,079)Brookings County (34,968)Meade County (30,297)Codington County (28,556)Lawrence County (26,574)Yankton County (23,379)Davison County (19,936)All South Dakota counties →

Part of South Dakota

South Dakota demographic profile All South Dakota data →

Metro areas in South Dakota

Sioux Falls (293,107)Rapid City (151,064)Sioux City (144,007)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Spink County, South Dakota has a population of 6,283 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 29th-largest county in South Dakota. Population density is 4 people per square mile.

The population of Spink County has declined 4.9% since 2010 (6,421 → 6,108), a -0.36% annualized rate.

The median household income in Spink County, South Dakota is $73,011, with mean (average) household income of $92,183 and per-capita income of $37,347. 4.3% of residents live below the federal poverty level.

In Spink County, the largest racial and ethnic groups are White (94.6%), Black or African American (0.9%), Hispanic or Latino (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Spink County, South Dakota is 45.1 years. Residents are 50.4% female and 49.6% male.

The median home value in Spink County is $117,400 and median monthly rent is $691. 75.1% of occupied housing units are owner-occupied. The county has 2,989 total housing units, 17.9% of which are vacant.

The largest employment sector in Spink County, South Dakota is professional, scientific, and management services, employing 22.7% of workers. The unemployment rate is 1.0%.

Sioux Falls is among the largest cities associated with Spink County, South Dakota, with a population of 197,642.