Assumption city, Illinois
Official LSAD Designation: Assumption city • Census GEOID: 1702609
• Christian County
Assumption city is an incorporated city in Christian County, Illinois. According to official records from the Census (2025), Assumption city had an estimated population of 1,112 residents. Official Census Bureau geographic records classify this community under LSAD designation Assumption city (GEOID 1702609).
Local Government Administration U.S. Census Bureau GMAF
City Of Assumption
Municipal
Official Title:
Treasurer
Address:
PO BOX 106, ASSUMPTION IL 62510-0106
County Of Christian
County
Official Title:
Chairman
Address:
PO BOX 647, TAYLORVILLE IL 62568-0647
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 1,112 | 2025 |
| Median Household Income | $57,500 | 2020-2024 |
| Median Home Value | $89,700 | 2020-2024 |
| Land Area | 0.99 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).