THE CALHOUN COUNTY LAND BRIEF
Land in the
River Hills setting.
Calhoun County has 253.8 square miles of land in Illinois. 2 mapped landscape regions meet across Calhoun County: River Hills, Upper Mississippi Alluvial 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
Where the landscape changes
Calhoun County intersects 2 mapped regional units. The largest mapped shares are:
- River Hills64.8%
- Upper Mississippi Alluvial Plain35.2%
Finding your parcel within Calhoun County
The atlas lists 5 cities, towns, townships, and Census communities associated with Calhoun County, including Hardin, Batchtown, Kampsville. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Calhoun County by land and water
The Census records 29.8 square miles of water within Calhoun County, or 10.5% of its total area. That share is close to Calhoun County’s 10.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Calhoun County has 119.3 times the land area of nearby Hardin village (2.13 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Greene County, Jersey County, Pike County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

