St. Ann city, Missouri
Official LSAD Designation: St. Ann city • Census GEOID: 2963956
• St. Louis County
Demographics & Population Profile
Population and demographics for St. Ann city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 12,617 | — | 2025 | Census |
| Median Age | 34.8 yrs | ±1.6 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 5,880 | ±418 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).