THE BROWN COUNTY LAND BRIEF
Land in the
Pre-Wisconsinan Drift Plains setting.
Brown County has 489.6 square miles of land in Ohio. 2 mapped landscape regions meet across Brown County: Pre-Wisconsinan Drift Plains, Outer Bluegrass.
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
Brown County intersects 2 mapped regional units. The largest mapped shares are:
- Pre-Wisconsinan Drift Plains82.4%
- Outer Bluegrass17.6%
Interior Plateau in Brown 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 Brown County
The atlas lists 28 cities, towns, townships, and Census communities associated with Brown County, including Perry, Lewis, Union. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Brown County by land and water
The Census records 3.42 square miles of water within Brown County, or 0.7% of its total area. That share is close to Brown County’s 0.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Brown County has 18.2 times the land area of nearby Franklin township (26.9 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adams County, Clermont County, Clinton County, Highland County within Ohio. A tract near one of these lines should be matched to the county identifier on its own records.

