McHenry city, Illinois
Official LSAD Designation: McHenry city • Census GEOID: 1745694
• McHenry County
Demographics & Population Profile
Population and demographics for McHenry city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 29,217 | — | 2025 | Census |
| Median Age | 43.9 yrs | ±2.1 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 11,897 | ±498 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).