Altamont city, Illinois
Official LSAD Designation: Altamont city • Census GEOID: 1701049
• Effingham County
Demographics & Population Profile
Population and demographics for Altamont city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 2,186 | — | 2025 | Census |
| Median Age | 38.9 yrs | ±4.1 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 889 | ±103 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).