Blue Island city, Illinois
Official LSAD Designation: Blue Island city • Census GEOID: 1706704
• Cook County
Demographics & Population Profile
Population and demographics for Blue Island city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 21,805 | — | 2025 | Census |
| Median Age | 38.1 yrs | ±2.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 8,464 | ±544 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).