Fairmont City village, Illinois
Official LSAD Designation: Fairmont City village • Census GEOID: 1724933
• Madison County / St. Clair County
Demographics & Population Profile
Population and demographics for Fairmont City village.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 2,154 | — | 2025 | Census |
| Median Age | 38.9 yrs | ±5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 881 | ±182 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).