Effingham city, Illinois
Official LSAD Designation: Effingham city • Census GEOID: 1722736
• Effingham County
Demographics & Population Profile
Population and demographics for Effingham city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 12,406 | — | 2025 | Census |
| Median Age | 39.6 yrs | ±2.8 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 5,423 | ±283 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).