Granite City city, Illinois
Official LSAD Designation: Granite City city • Census GEOID: 1730926
• Madison County
Demographics & Population Profile
Population and demographics for Granite City city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 26,807 | — | 2025 | Census |
| Median Age | 40.4 yrs | ±2.3 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 11,562 | ±490 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).