St. Elmo city, Illinois
Official LSAD Designation: St. Elmo city • Census GEOID: 1766794
• Fayette County
St. Elmo city is an incorporated city in Fayette County, Illinois. According to official records from the Census (2025), St. Elmo city had an estimated population of 1,213 residents. Official Census Bureau geographic records classify this community under LSAD designation St. Elmo city (GEOID 1766794).
Local Government Administration U.S. Census Bureau GMAF
City Of St Elmo
Municipal
Official Title:
Mayor
Address:
411 N MAIN ST, SAINT ELMO IL 62458-1636
County Of Fayette
County
Official Title:
Treasurer
Address:
PO BOX 401, VANDALIA IL 62471-0401
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 1,213 | 2025 |
| Median Household Income | $45,294 | 2020-2024 |
| Median Home Value | $82,600 | 2020-2024 |
| Land Area | 1.48 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).