St. Louis city, Michigan
Official LSAD Designation: St. Louis city • Census GEOID: 2671000
• Gratiot County
Demographics & Population Profile
Population and demographics for St. Louis city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 7,406 | — | 2025 | Census |
| Median Age | 37.5 yrs | ±1.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 1,466 | ±128 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).