Grant County, South Dakota

Grant County, South Dakota, had an estimated population of 7,534 in 2025 across 1,765 km². The figures below come from the US Census Bureau's population estimates and the American Community Survey, each shown with its own vintage and its rank among South Dakota's counties and nationally.

Population: 7,534; 2025 estimate
Area: 1,765 km²
Density: 4; per km²
Median income: $75,028; household, ACS 2024
Median age: 44.5; years, ACS 2024

How South Dakota's counties spread

Amenities & Infrastructure

Indicator	Value	In South Dakota	In the US
Households with Broadband2024	84.1%	45 / 66	2,216 / 3,144
Median Gross Rent2024	$763	33 / 66	2,387 / 3,137
Median Home Value2024	$171,000	30 / 66	1,785 / 3,139
Owner-Occupied Homes2024	75.6%	31 / 66	1,415 / 3,144
Vacant Homes2024	12.4%	43 / 66	1,815 / 3,144

Demography

Indicator	Value	In South Dakota	In the US
Aged 65 and Over2024	23.4%	23 / 66	699 / 3,144
American Indian & Alaska Native2024	0.3%	58 / 66	922 / 3,144
Asian, non-Hispanic2024	0.8%	14 / 66	1,220 / 3,144
Average Household Size2024people	2.4	34 / 66	1,774 / 3,144
Black, non-Hispanic2024	0.4%	30 / 66	2,534 / 3,144
Foreign-Born2024	6.5%	3 / 66	727 / 3,144
Hispanic or Latino2024	7.4%	3 / 66	1,161 / 3,144
Median Age2024years	44.5	17 / 66	779 / 3,144
Sex Ratio2024per 1,000 males	923	53 / 66	2,702 / 3,144
Speak a Language Other Than English2024	10.8%	9 / 66	841 / 3,144
Under 182024	22.2%	47 / 66	1,395 / 3,144
Veterans2024	7.5%	28 / 66	1,353 / 3,144
White, non-Hispanic2024	89.3%	23 / 66	856 / 3,144

Economy

Indicator	Value	In South Dakota	In the US
Below Poverty Line2024	11.6%	27 / 66	1,968 / 3,144
Households on SNAP2024	7.6%	25 / 66	2,397 / 3,144
Income Inequality2024index	0.424	48 / 66	2,362 / 3,144
Median Household Income2024	$75,028	21 / 66	839 / 3,143
Per Capita Income2024	$37,694	39 / 66	1,145 / 3,144
Unemployment Rate2024	2.7%	27 / 66	2,587 / 3,144

Education

Indicator	Value	In South Dakota	In the US
Bachelor's Degree or Higher2024	25.3%	33 / 66	1,147 / 3,144
High School or Higher2024	91.6%	40 / 66	1,183 / 3,144

Health Coverage

Indicator	Value	In South Dakota	In the US
No Health Insurance2024	7.8%	32 / 66	1,569 / 3,144
With a Disability2024	15.1%	12 / 66	1,823 / 3,144

Population & Density

Indicator	Value	In South Dakota	In the US
Population2025	7,534	23 / 66	2,610 / 3,144
Population Density2025/km²	4	19 / 66	2,509 / 3,144

Work & Commute

Indicator	Value	In South Dakota	In the US
Commute by Public Transit2024	0.0%	32 / 66	2,161 / 3,144
Households with No Vehicle2024	3.6%	42 / 66	2,499 / 3,144
Mean Commute Time2024minutes	13.7	60 / 66	3,066 / 3,143
Work from Home2024	11.0%	29 / 66	968 / 3,144

Other counties of South Dakota

Compare Grant County against every other county on a map, add layers and run a scatter — open the atlas. Sources and vintages for every figure on this page are listed under datasets, or browse all 3,144 counties.