Grant County, South Dakota Demographics 2026

Name: Grant County, South Dakota Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Grant County, South Dakota has a population of 7,563, the 23rd most populous county in South Dakota. The median household income is $75,028 and the median home value is $171,000. The poverty rate is 11.6%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Grant County Quick Facts

Population 7,563

Median Household Income $75,028

Median Home Value $171,000

Poverty Rate 11.6%

Unemployment Rate 2.7%

Median Age 44.5 years

Homeownership Rate 75.6%

Affordability Ratio 2.3x

Bachelor's Degree+ 25.3%

High School Graduation 91.6%

Cities/Places 9

Population 7,563 23rd of 66

Median Income $75,028 about the same as state

Poverty Rate 11.6%

Unemployment 2.7%

How Grant County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	7,544	7,563	+0.3%
Median household income	$73,818	$75,028	+1.6%
Median home value	$179,400	$171,000	-4.7%

Median Household Income

Grant

$75,028

$75,081

National

$80,734

Median Home Value

Grant

$171,000

$257,400

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 17.1%

$25K-$50K 17.7%

$50K-$100K 30.2%

$100K+ 35.0%

Detailed income brackets

Under $10K

3.5%

$10K-$15K

3.8%

$15K-$20K

4.0%

$20K-$25K

5.8%

$25K-$30K

4.6%

$30K-$35K

3.5%

$35K-$40K

2.4%

$40K-$45K

3.5%

$45K-$50K

3.7%

$50K-$60K

7.5%

$60K-$75K

7.7%

$75K-$100K

15.0%

$100K-$125K

13.3%

$125K-$150K

9.5%

$150K-$200K

5.8%

$200K+

6.3%

Employment

2.7% Unemployment Rate State: 2.9%|National: 5.2%

69.1% Labor Force Participation

Housing Overview

Owner 75.6%

Renter 24.4%

Affordability Index Very Affordable

2.3x home value to income ratio

Median gross rent $763/mo 12.2% of median household income annually

People & Demographics

Age Distribution

Under 18

22.2%

18-34

18.1%

35-54

21.5%

55-74

27.6%

75+

10.6%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 35 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Grant County

City	Population	Median Income	Poverty	Home Value
Milbank	3,525	$56,011	13.2%	$155,000
Big Stone City	706	$63,333	24.9%	$151,200
Revillo	88	$56,300	11.4%	N/A
La Bolt	80	$71,667	7.5%	$65,000
Stockholm	74	N/A	16.2%	$97,000
Strandburg	58	$68,125	31.0%	$104,200
Twin Brooks	29	N/A	27.6%	$75,800
Marvin	19	$43,125	15.8%	N/A
Albee	4	N/A	25.0%	N/A

Explore South Dakota Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Grant County is located in South Dakota with a total population of 7,563. It is the 23rd most populous county out of 66 in South Dakota. The county encompasses 9 Census-designated places.

Age Demographics

The median age in Grant County is 44.5 years. This is 17% higher than the state median of 38.0 years. 10.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Grant County is $75,028. This is about the same as the state median of $75,081. It is also 7% lower than the national median of $80,734. The poverty rate stands at 11.6%. This is 3% lower than the state poverty rate of 11.9%. The unemployment rate is 2.7%. This is 6% lower than the state rate of 2.9%. The median home value is $171,000. Housing costs are 34% lower than the state median of $257,400. With a home-value-to-income ratio of just 2.3x, Grant County is one of the most affordable housing markets in the area. 75.6% of occupied housing units are owner-occupied. This homeownership rate is 10% higher than the state average of 68.6%.

Race & Ethnicity

Grant County has a predominantly White (non-Hispanic) population, comprising 89.3% of all residents. Hispanic or Latino residents account for 7.4%. The Black or African American population (0.4%) is well below the state average of 2.1%. The Hispanic or Latino population is significantly higher than the state average (7.4% vs 4.8%).

Education

25.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 21% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.6%.

Data Sources & Methodology

All figures for Grant County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against South Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Grant County, South Dakota?

Grant County has a population of 7,563, making it the 23rd most populous county in South Dakota.

What is the median income in Grant County?

The median household income in Grant County is $75,028 with a poverty rate of 11.6%.

How many cities are in Grant County, South Dakota?

Grant County contains 9 Census-designated places.