Grant County, South Dakota Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 23rd-largest in South Dakota
The population of Grant County, South Dakota is 7,544 as of the 2023 American Community Survey, making it the 23rd-largest county in South Dakota. The median household income is $73,818, the median home value is $179,400, and the median age is 43.7.
The population of Grant County has grown 3.6% since 2010 (7,351 → 7,618), a +0.26% annualized rate.
7,544
Population
+0.26%
Annual growth
11
People / sq mi
$73,818
Median Income
$179,400
Median Home Value
Grant County covers 681 sq mi of land at 11.1 people per square mile.
About Grant County, SD
Grant County is a county in South Dakota with a population of 7,544. It ranks #23 among counties in South Dakota by population. The median age is 43.7, older than the national median. The population is 52.7% male and 47.3% female.
The median household income in Grant County is $73,818, near the US median of $74,580. 6.4% of residents live below the federal poverty level. Home values sit at a median of $179,400, with monthly rent averaging $668. The homeownership rate of 81.6% is higher than the national rate of 64.8%.
Educational attainment in Grant County reflects 25.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 9.7% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 15.1 minutes each way.
Grant County Population History (2010-2024)
The county of Grant County had a population of 7,351 in 2010 and 7,618 in 2024, a 3.6% growth over 14 years. The peak was 7,618 in 2024. Average annual growth rate: 0.27%.
7,618
Population (2024)
7,351
Population (2010)
7,618
Peak (2024)
0.27%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 7,351 |
| 2011 | 7,358 |
| 2012 | 7,401 |
| 2013 | 7,390 |
| 2014 | 7,315 |
| 2015 | 7,221 |
| 2016 | 7,223 |
| 2017 | 7,179 |
| 2018 | 7,123 |
| 2019 | 7,102 |
| 2020 | 7,539 |
| 2021 | 7,554 |
| 2022 | 7,535 |
| 2023 | 7,571 |
| 2024 | 7,618 |
Race & Ethnicity
| White | 91.1% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.4% |
| Two or More Races | 0.0% |
Age & Sex
43.7
Median Age
47.3%
Female
52.7%
Male
23.0%
Age 65+
Age Distribution
Children (under 15): 17.4% · Seniors (65+): 23.0%
Income & Poverty
| Median household income | $73,818+$1,397 vs state |
| Mean household income | $92,573 |
| Per-capita income | $38,497 |
| Poverty rate | 6.4%-1.0% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 65.9% |
Top Industries by Employment
The largest employment sector in Grant County is professional & business services, accounting for 22.0% of workers.
How residents commute
0.0%
Drive alone
4.4%
Carpool
75.3%
Public transit
9.7%
Work from home
15.1 min
Avg commute
Housing
$179,400$-57,400 vs state
Median home value
$668
Median rent
81.6%
Homeownership rate
3,441
Total housing units
86.9%
Occupied
13.1%
Vacant
18.4%
Renter-occupied
Social & access
90.1%
With health insurance
90.2%
With broadband internet
43.0%
Foreign-born
6.8%
Veterans (18+)
14.9%
With a disability
89.6%
Speak language other than English at home
Education
92.1%
High School+
25.5%
Bachelor's+
Largest cities in South Dakota
Other counties in South Dakota
Part of South Dakota
Metro areas in South Dakota
County rankings
Frequently Asked Questions
Grant County, South Dakota has a population of 7,544 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 23rd-largest county in South Dakota. Population density is 11 people per square mile.
The population of Grant County has grown 3.6% since 2010 (7,351 → 7,618), a +0.26% annualized rate.
The median household income in Grant County, South Dakota is $73,818, with mean (average) household income of $92,573 and per-capita income of $38,497. 6.4% of residents live below the federal poverty level.
In Grant County, the largest racial and ethnic groups are White (91.1%), Hispanic or Latino (3.4%), Black or African American (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Grant County, South Dakota is 43.7 years. Residents are 47.3% female and 52.7% male.
The median home value in Grant County is $179,400 and median monthly rent is $668. 81.6% of occupied housing units are owner-occupied. The county has 3,441 total housing units, 13.1% of which are vacant.
The largest employment sector in Grant County, South Dakota is professional, scientific, and management services, employing 22.0% of workers. The unemployment rate is 2.5%.
Sioux Falls is among the largest cities associated with Grant County, South Dakota, with a population of 197,642.
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Statewide data for South Dakota
Population, race, income, age, and trends across South Dakota
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.