Vermillion city, South Dakota
Official LSAD Designation: Vermillion city • Census GEOID: 4666700
• Clay County
Demographics & Population Profile
Population and demographics for Vermillion city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 11,720 | — | 2025 | Census |
| Median Age | 23.1 yrs | ±0.6 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 4,312 | ±205 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).