THE CLINTON COUNTY LAND BRIEF
Land in the
Southern Illinoian Till Plain setting.
Clinton County has 473.9 square miles of land in Illinois. The mapped landscape region in Clinton County is Southern Illinoian Till Plain.
Broad terraced river valleys contrast with wooded slopes and dissected glacial plains. Bottomland settings and upland oak landscapes occur close together across the Interior River Valleys and Hills.
Regional context: Interior River Valleys and Hills ↗ · Regional mapping across the county footprint
Finding your parcel within Clinton County
The atlas lists 31 cities, towns, townships, and Census communities associated with Clinton County, including Looking Glass, Germantown, St. Rose. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Clinton County by land and water
The Census records 29.2 square miles of water within Clinton County, or 5.8% of its total area. That share is close to Clinton County’s 5.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Clinton County has 768.1 times the land area of nearby Beckemeyer village (0.62 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Bond County, Fayette County, Madison County, Marion County, St. Clair County, Washington County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

