THE INDIANA COUNTY LAND BRIEF
Land in the
Pittsburgh Low Plateau setting.
Indiana County has 827.4 square miles of land in Pennsylvania. 3 mapped landscape regions meet across Indiana County: Pittsburgh Low Plateau, Uplands and Valleys of Mixed Land Use, Forested Hills and Mountains.
Rounded wooded hills and intervening valleys form an unglaciated plateau landscape. Valley floors contain much of the region's open land, contrasting with its more forested slopes.
Regional context: Western Allegheny Plateau ↗ · Regional mapping across the county footprint
Where the landscape changes
Indiana County intersects 3 mapped regional units. The largest mapped shares are:
- Pittsburgh Low Plateau57.9%
- Uplands and Valleys of Mixed Land Use34.1%
- Forested Hills and Mountains8%
Central Appalachians in Indiana County
A rugged, deeply cut plateau of sandstone, shale and related rocks supports extensive forest. High hills and low mountains distinguish this Appalachian landscape from smoother neighboring regions.
Read the regional source ↗Finding your parcel within Indiana County
The atlas lists 50 cities, towns, townships, and Census communities associated with Indiana County, including Green, Cherryhill, Rayne. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Indiana County by land and water
The Census records 6.98 square miles of water within Indiana County, or 0.8% of its total area. That share is close to Indiana County’s 0.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Indiana County has 19.5 times the land area of nearby White township (42.4 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Armstrong County, Cambria County, Clearfield County, Jefferson County, Westmoreland County within Pennsylvania. A tract near one of these lines should be matched to the county identifier on its own records.

