St. Charles city, Iowa
Official LSAD Designation: St. Charles city • Census GEOID: 1969915
• Madison 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) | 641 | — | 2025 | Census |
| Median Age | 36.2 yrs | ±4.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 348 | ±82 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).