THE WASHINGTON COUNTY LAND BRIEF
Land in the
Mitchell Plain setting.
Washington County has 513.7 square miles of land in Indiana. 4 mapped landscape regions meet across Washington County: Mitchell Plain, Knobs-Norman Upland, Pre-Wisconsinan Drift Plains, among others.
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.
Regional context: Interior Plateau ↗ · Regional mapping across the county footprint
Where the landscape changes
Washington County intersects 4 mapped regional units. The largest mapped shares are:
- Mitchell Plain61.2%
- Knobs-Norman Upland29.5%
- Pre-Wisconsinan Drift Plains8.2%
- Crawford-Mammoth Cave Uplands1.2%
Eastern Corn Belt Plains in Washington County
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.
Read the regional source ↗Finding your parcel within Washington County
The atlas lists 23 cities, towns, townships, and Census communities associated with Washington County, including Washington, Gibson, Jefferson. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Washington County by land and water
The Census records 2.91 square miles of water within Washington County, or 0.6% of its total area. That share is close to Washington County’s 0.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Washington County has 121.6 times the land area of nearby Salem city (4.22 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Clark County, Crawford County, Floyd County, Harrison County, Jackson County, Lawrence County, Orange County, Scott County within Indiana. A tract near one of these lines should be matched to the county identifier on its own records.

