Nason city, Illinois
Official LSAD Designation: Nason city • Census GEOID: 1751726
• Jefferson County
Nason city is an incorporated city in Jefferson County, Illinois. According to official records from the Census (2025), Nason city had an estimated population of 198 residents. Official Census Bureau geographic records classify this community under LSAD designation Nason city (GEOID 1751726).
Local Government Administration U.S. Census Bureau GMAF
Town Of Nason
Municipal
Official Title:
City Treasurer
Address:
121 N 9TH ST, NASON IL 62816
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 | 198 | 2025 |
| Median Household Income | $50,052 | 2020-2024 |
| Median Home Value | $73,600 | 2020-2024 |
| Land Area | 0.91 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).