Mount Vernon city, Illinois
Official LSAD Designation: Mount Vernon city • Census GEOID: 1751180
• Jefferson County
Demographics & Population Profile
Population and demographics for Mount Vernon city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 14,187 | — | 2025 | Census |
| Median Age | 38.9 yrs | ±1.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 6,108 | ±248 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).