St. Clair city, Missouri
Official LSAD Designation: St. Clair city • Census GEOID: 2964136
• Franklin County
Demographics & Population Profile
Population and demographics for St. Clair city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 4,813 | — | 2025 | Census |
| Median Age | 37.6 yrs | ±5.8 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 2,034 | ±151 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).