THE MORGAN COUNTY LAND BRIEF
Land in the
Western Dissected Illinoian Till Plain setting.
Morgan County has 569 square miles of land in Illinois. 4 mapped landscape regions meet across Morgan County: Western Dissected Illinoian Till Plain, Illinois/Indiana Prairies, River Hills, among others.
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
Morgan County intersects 4 mapped regional units. The largest mapped shares are:
- Western Dissected Illinoian Till Plain59.5%
- Illinois/Indiana Prairies29.7%
- River Hills5.5%
- Upper Mississippi Alluvial Plain5.2%
Central Corn Belt Plains in Morgan County
Glaciated plains historically supported tallgrass prairie mixed with oak and hickory woodland. Dark prairie soils and broad farming landscapes distinguish much of the Central Corn Belt.
Read the regional source ↗Finding your parcel within Morgan County
The atlas lists 12 cities, towns, townships, and Census communities associated with Morgan County, including Jacksonville, South Jacksonville, Waverly. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Morgan County by land and water
The Census records 3.5 square miles of water within Morgan County, or 0.6% of its total area. That share is close to Morgan County’s 0.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Morgan County has 251.4 times the land area of nearby South Jacksonville village (2.26 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Brown County, Cass County, Greene County, Macoupin County, Pike County, Sangamon County, Scott County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

