THE GREENE COUNTY LAND BRIEF
Land in the
Western Dissected Illinoian Till Plain setting.
Greene County has 543.1 square miles of land in Illinois. 3 mapped landscape regions meet across Greene County: Western Dissected Illinoian Till Plain, 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
Greene County intersects 3 mapped regional units. The largest mapped shares are:
- Western Dissected Illinoian Till Plain64.2%
- River Hills21.2%
- Upper Mississippi Alluvial Plain14.6%
Finding your parcel within Greene County
The atlas lists 22 cities, towns, townships, and Census communities associated with Greene County, including Kane, Rockbridge, Woodville. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Greene County by land and water
The Census records 3.25 square miles of water within Greene County, or 0.6% of its total area. That share is close to Greene County’s 0.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Greene County has 12.2 times the land area of nearby Carrollton township (44.5 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Calhoun County, Jersey County, Macoupin County, Morgan County, Pike County, Scott County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

