Grant County's estimated 2026 population is 7,712 with a growth rate of 0.61% in the past year according to the most recent United States census data. Grant County is the 23rd largest county in South Dakota. The 2010 population was 7,351 and has seen a growth of 4.91% since that time.
Data after 2023 is projected based on recent change
The racial composition of Grant County includes 91.09% White, 3.19% other race, and smaller percentages for Two or more races, Native American, Asian, Black or African American and multiracial populations.
White (91.09%)
Other race (3.19%)
Two or more races (2.44%)
Native American (2.07%)
Asian (0.62%)
Black or African American (0.58%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 6,872 | 91.09% |
| Other race | 241 | 3.19% |
| Two or more races | 184 | 2.44% |
| Native American | 156 | 2.07% |
| Asian | 47 | 0.62% |
| Black or African American | 44 | 0.58% |
Married
Widowed
Divorced
Separated
Never Married
Grant County's average per capita income is $43,564. Household income levels show a median of $73,818. The poverty rate stands at 11.2%.
Name | Median | Mean |
|---|---|---|
| Married Families | $95,750 | - |
| Families | $94,097 | $115,211 |
| Households | $73,818 | $92,573 |
| Non Families | $31,071 | $43,324 |
Average Income
Median Household Income
Poverty Rate