Grant County, South Dakota
Located in South Dakota, Grant County has a population of 7,563 residents and a median age of 44.5 years, making it the #2,684 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.6%. The median home value is $171,000, and the median household income is $75,028, which is 0% below the national median.
Demographics
Grant County has a population of 7,563, making it the #2,684 most populous county in the US. The median age is 44.5 years, which is 14.4% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Grant County is $75,028, ranking #839 out of 3,222 counties — 0.2% below the national median. The poverty rate is 11.6% and unemployment stands at 2.7%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Grant County is $171,000 (-39.3% vs national). Renters pay a median of $763/mo and the homeownership rate is 75.6%.
Median Home Value Trend
Rankings →Household Type
Education
In Grant County, 25.3% of adults age 25+ hold a bachelor's degree or higher, which is 24.9% below the national average, ranking #1,189 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Grant County is 78.5 years. 12.8% of adults report poor or fair health and 10.4% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.0% of adults in Grant County smoke , 33.1% are obese , and 23.4% report excessive drinking.
Adult Smoking Trend
Safety
. Motor vehicle deaths occur at a rate of 27.8 per 100,000.
Motor Vehicle Deaths Trend
Families & Children
11.6% of children in Grant County live in poverty . The teen birth rate is 10.5 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Grant County is 70.8%. The mean commute time is 16.0 min, which is 42.1% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Grant County voted Republican with a margin of 45.4%. The vote was 26.1% Dem / 71.5% Rep. Compared to 2020, the margin shifted 3.7 toward Republicans .
Vote Share Over Time
About Grant County, South Dakota
Grant County, South Dakota has a total population of 7,563, making it the 2,684th most populous county in the United States. The median age in Grant County is 44.5 years, which is 14.4% above the national median of 38.9 years.
The median household income in Grant County is $75,028, which ranks #839 of 3,222 counties nationwide. This is 0.2% below the national median of $75,149. The poverty rate is 11.6%, lower than the national rate of 12.6%. The unemployment rate stands at 2.7%.
The median home value in Grant County is $171,000, 39.3% below the national median. Renters in Grant County pay a median gross rent of $763 per month. The homeownership rate is 75.6%, compared to the national rate of 64.4%.
In Grant County, 25.3% of residents aged 25 and older hold a bachelor's degree or higher, 24.9% below the national average of 33.7%. Health insurance coverage stands at 92.2% of the population. The average commute time for workers is 16.0 min.
Grant County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 89.3% of the population, followed by Hispanic or Latino (7.4%) and Two or More Races (1.9%).
All data for Grant County, South Dakota comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.