THE RICHLAND COUNTY LAND BRIEF
Land in the
Southern Illinoian Till Plain setting.
Richland County has 360 square miles of land in Illinois. 2 mapped landscape regions meet across Richland County: Southern Illinoian Till Plain, Wabash-Ohio Bottomlands.
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
Richland County intersects 2 mapped regional units. The largest mapped shares are:
- Southern Illinoian Till Plain95%
- Wabash-Ohio Bottomlands5%
Finding your parcel within Richland County
The atlas lists 15 cities, towns, townships, and Census communities associated with Richland County, including Olney, Claremont, Noble. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Richland County by land and water
The Census records 1.87 square miles of water within Richland County, or 0.5% of its total area. That share is close to Richland County’s 0.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Richland County has 7.6 times the land area of nearby Olney township (47.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Clay County, Crawford County, Edwards County, Jasper County, Lawrence County, Wabash County, Wayne County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

