THE CLARK COUNTY LAND BRIEF
Land in the
Mad River Interlobate Area setting.
Clark County has 395.9 square miles of land in Ohio. 3 mapped landscape regions meet across Clark County: Mad River Interlobate Area, Darby Plains, Loamy High Lime Till Plains.
Rolling glacial till plains are interrupted by end moraines and areas of older, more dissected deposits. The historical landscape had more tree cover than the Central Corn Belt to the west.
Regional context: Eastern Corn Belt Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Clark County intersects 3 mapped regional units. The largest mapped shares are:
- Mad River Interlobate Area61.5%
- Darby Plains20.8%
- Loamy High Lime Till Plains17.7%
Finding your parcel within Clark County
The atlas lists 27 cities, towns, townships, and Census communities associated with Clark County, including Harmony, Pleasant, Madison. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Clark County by land and water
The Census records 5.64 square miles of water within Clark County, or 1.4% of its total area. That share is close to Clark County’s 1.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Clark County has 14.9 times the land area of nearby Springfield city (26.6 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Champaign County, Greene County, Madison County, Miami County, Montgomery County within Ohio. A tract near one of these lines should be matched to the county identifier on its own records.

