Joliet city, Illinois
Official LSAD Designation: Joliet city • Census GEOID: 1738570
• Kendall County / Will County
Demographics & Population Profile
Population and demographics for Joliet city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 152,241 | — | 2025 | Census |
| Median Age | 35.8 yrs | ±0.7 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 51,055 | ±807 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).