THE EFFINGHAM COUNTY LAND BRIEF
Land in the
Southern Illinoian Till Plain setting.
Effingham County has 478.8 square miles of land in Illinois. The mapped landscape region in Effingham 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 Effingham County
The atlas lists 25 cities, towns, townships, and Census communities associated with Effingham County, including Jackson, Mason, Mound. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Effingham County by land and water
The Census records 1.23 square miles of water within Effingham County, or 0.3% of its total area. That share is close to Effingham County’s 0.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Effingham County has 438.4 times the land area of nearby Watson village (1.09 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Clay County, Cumberland County, Fayette County, Jasper County, Shelby County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

