| Name | Walworth County |
| State | South Dakota |
| FIPS Code | 46129 |
| County Seat | Selby |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 5,264 |
| Population Growth Rate(2020-2024) | -1.03% |
| Majority Ethnicity | White 86.85% |
| Public School Majority Ethnicity | White 67% |
| Partisan Voting Index | Strongly Republican:+29 |
| Unemployment Rate (May 2026) | 3.5% |
| Sales Tax Rate (2025) | 4.2% |
| Area Code(s) | 605 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 86.85% |
| African American | 0.33% |
| Hispanic | 1.3% |
| Asian | 0.12% |
| Native American | 11.4% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 67.11% |
| African American | 1.33% |
| Hispanic | 2.92% |
| Asian | 1.19% |
| Native American | 24.27% |
| Hawaiin/Pacific Islander | 0% |