Stanley County's estimated 2026 population is 2,965 with a growth rate of -0.84% in the past year according to the most recent United States census data. Stanley County is the 47th largest county in South Dakota. The 2010 population was 2,972 and has seen a growth of -0.24% since that time.
Data after 2023 is projected based on recent change
The racial composition of Stanley County includes 90.97% White, and smaller percentages for Native American, other race, Black or African American and multiracial populations.
White (90.97%)
Two or more races (5.74%)
Native American (2.52%)
Other race (0.7%)
Black or African American (0.07%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 2,740 | 90.97% |
| Two or more races | 173 | 5.74% |
| Native American | 76 | 2.52% |
| Other race | 21 | 0.7% |
| Black or African American | 2 | 0.07% |
Married
Widowed
Divorced
Separated
Never Married
Stanley County's average per capita income is $49,219. Household income levels show a median of $77,000. The poverty rate stands at 2.06%.
Name | Median | Mean |
|---|---|---|
| Married Families | $121,906 | - |
| Families | $108,636 | $142,078 |
| Households | $77,000 | $106,448 |
| Non Families | $41,500 | $52,017 |
Average Income
Median Household Income
Poverty Rate