Walworth County's 2026 population is estimated at 5,190, reflecting a -0.52% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Walworth County is the 36th largest county in South Dakota. The 2010 population was 5,443 and has grown -4.65% since 2010.
Overall: 41.7 years
Female: 43.8 years
Male: 39 years
There are 4,021 adults, (1,212 of whom are seniors) in Walworth County.
Female: 2,586 (49.1%)
Male: 2,685 (50.9%)
The racial composition of Walworth County includes 78.58% White, 10.64% Native American, and smaller percentages for Asian, Black or African American, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 4,142 | 78.58% |
| Native American | 561 | 10.64% |
| Two or more races | 506 | 9.6% |
| Asian | 32 | 0.61% |
| Black or African American | 18 | 0.34% |
| Other race | 12 | 0.23% |
Walworth County 's average per capita income is $51,305. Household income levels show a median of $65,026. The poverty rate stands at 14.92%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $86,823 | - |
| Families | $82,565 | $104,875 |
| Households | $65,026 | $84,478 |
| Non Families | $47,552 | $51,736 |
Average Income
Median Household Income
Poverty Rate