St. Charles city, Missouri
Official LSAD Designation: St. Charles city • Census GEOID: 2964082
• St. Charles County
Demographics & Population Profile
Population and demographics for St. Charles city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 72,561 | — | 2025 | Census |
| Median Age | 38.6 yrs | ±0.8 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 30,362 | ±631 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).