St. Peters city, Missouri
Official LSAD Designation: St. Peters city • Census GEOID: 2965126
• St. Charles County
Demographics & Population Profile
Population and demographics for St. Peters city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 61,479 | — | 2025 | Census |
| Median Age | 41 yrs | ±1.1 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 24,591 | ±651 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).