THE GALLATIN COUNTY LAND BRIEF
Land in the
Wabash-Ohio Bottomlands setting.
Gallatin County has 322.9 square miles of land in Illinois. 4 mapped landscape regions meet across Gallatin County: Wabash-Ohio Bottomlands, Northern Shawnee Hills, Southern Illinoian Till Plain, 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
Gallatin County intersects 4 mapped regional units. The largest mapped shares are:
- Wabash-Ohio Bottomlands72.2%
- Northern Shawnee Hills22%
- Southern Illinoian Till Plain3%
- Wabash River Bluffs and Low Hills2.7%
Interior Plateau in Gallatin County
Open hills, irregular plains and tablelands are developed on limestone and other sedimentary rocks. Oak-hickory woodland, local prairie and cedar-glade settings contribute to this diverse inland plateau.
Read the regional source ↗Finding your parcel within Gallatin County
The atlas lists 17 cities, towns, townships, and Census communities associated with Gallatin County, including New Haven, Bowlesville, Eagle Creek. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Gallatin County by land and water
The Census records 5.16 square miles of water within Gallatin County, or 1.6% of its total area. That share is close to Gallatin County’s 1.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Gallatin County has 367 times the land area of nearby Ridgway village (0.88 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Hamilton County, Hardin County, Saline County, White County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

