Altamont city, Illinois
Official LSAD Designation: Altamont city • Census GEOID: 1701049
• Effingham County
Altamont city is an incorporated city in Effingham County, Illinois. According to official records from the Census (2025), Altamont city had an estimated population of 2,186 residents. Official Census Bureau geographic records classify this community under LSAD designation Altamont city (GEOID 1701049).
Local Government Administration U.S. Census Bureau GMAF
City Of Altamont
Municipal
Official Title:
City Clerk
Address:
202 N 2ND ST, ALTAMONT IL 62411-1494
County Of Effingham
County
Official Title:
Chairman
Address:
101 N 4TH ST, SUITE 301, EFFINGHAM IL 62401-3482
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 2,186 | 2025 |
| Median Household Income | $75,510 | 2020-2024 |
| Median Home Value | $129,800 | 2020-2024 |
| Land Area | 1.54 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).