Mount Vernon city, Illinois
Official LSAD Designation: Mount Vernon city • Census GEOID: 1751180
• Jefferson County
Mount Vernon city is an incorporated city in Jefferson County, Illinois. According to official records from the Census (2025), Mount Vernon city had an estimated population of 14,187 residents. Official Census Bureau geographic records classify this community under LSAD designation Mount Vernon city (GEOID 1751180).
Local Government Administration U.S. Census Bureau GMAF
City Of Mount Vernon
Municipal
Official Title:
Fin. Director
Address:
PO BOX 1708, MOUNT VERNON IL 62864-0034
County Of Jefferson
County
Official Title:
Executive Assistant
Address:
100 S 10TH ST, RM 106, MOUNT VERNON IL 62864
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 14,187 | 2025 |
| Median Household Income | $55,357 | 2020-2024 |
| Median Home Value | $99,800 | 2020-2024 |
| Land Area | 14.66 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).