Grant County's estimated 2026 population is 7,455 with a growth rate of -1.05% in the past year according to the most recent United States census data. Grant County is the 24th largest county in South Dakota. The 2010 population was 7,351 and has seen a growth of 1.41% since that time.
Data after 2023 is projected based on recent change
Overall: 44.5 years
Female: 45.7 years
Male: 41.2 years
There are 5,886 adults, (1,767 of whom are seniors) in Grant County.
Female: 3,630 (48%)
Male: 3,933 (52%)
The racial composition of Grant County includes 90.73% White, and smaller percentages for Two or more races, Native American, other race, Asian, Black or African American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 6,862 | 90.73% |
| Two or more races | 221 | 2.92% |
| Native American | 203 | 2.68% |
| Other race | 189 | 2.5% |
| Asian | 60 | 0.79% |
| Black or African American | 28 | 0.37% |
Grant County's average per capita income is $45,772. Household income levels show a median of $75,028. The poverty rate stands at 11.58%.
Name | Median | Mean |
|---|---|---|
| Married Families | $100,579 | - |
| Families | $94,931 | $111,447 |
| Households | $75,028 | $88,634 |
| Non Families | $36,250 | $45,353 |
Average Income
Median Household Income
Poverty Rate