Spink County's 2026 population is estimated at 6,026, reflecting a -0.68% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Spink County is the 29th largest county in South Dakota. The 2010 population was 6,421 and has grown -6.15% since 2010.
Data after 2023 is projected based on recent change
Overall: 45.5 years
Female: 47.3 years
Male: 43 years
There are 4,906 adults, (1,522 of whom are seniors) in Spink County.
Female: 3,072 (49.4%)
Male: 3,147 (50.6%)
The racial composition of Spink County includes 92.75% White, and smaller percentages for Black or African American, Native American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 5,768 | 92.75% |
| Two or more races | 311 | 5% |
| Black or African American | 97 | 1.56% |
| Native American | 28 | 0.45% |
| Other race | 15 | 0.24% |
Spink County 's average per capita income is $45,162. Household income levels show a median of $70,139. The poverty rate stands at 10.05%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $101,818 | - |
| Families | $95,104 | $110,127 |
| Households | $70,139 | $90,477 |
| Non Families | $50,461 | $57,902 |
Average Income
Median Household Income
Poverty Rate