Keithsburg city, Illinois
Official LSAD Designation: Keithsburg city • Census GEOID: 1739298
• Mercer County
Keithsburg city is an incorporated city in Mercer County, Illinois. According to official records from the Census (2025), Keithsburg city had an estimated population of 546 residents. Official Census Bureau geographic records classify this community under LSAD designation Keithsburg city (GEOID 1739298).
Local Government Administration U.S. Census Bureau GMAF
City Of Keithsburg
Municipal
Official Title:
City Clerk
Address:
PO BOX 87, KEITHSBURG IL 61442-0087
County Of Mercer
County
Official Title:
Mercer County Clerk
Address:
COUNTY BUILDING, ALEDO IL 61231
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 546 | 2025 |
| Median Household Income | $44,625 | 2020-2024 |
| Median Home Value | $65,900 | 2020-2024 |
| Land Area | 2.56 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).