THE CLINTON COUNTY LAND BRIEF
Land in the
Unglaciated High Allegheny Plateau setting.
Clinton County has 889.6 square miles of land in Pennsylvania. 7 mapped landscape regions meet across Clinton County: Unglaciated High Allegheny Plateau, Northern Sandstone Ridges, Northern Limestone/Dolomite Valleys, among others.
Forest-covered plateau surfaces, high hills and low mountains are underlain by layered sedimentary rocks. Most of this region escaped continental glaciation, leaving deeply cut upland terrain.
Regional context: North Central Appalachians ↗ · Regional mapping across the county footprint
Where the landscape changes
Clinton County intersects 7 mapped regional units. The largest mapped shares are:
- Unglaciated High Allegheny Plateau69.7%
- Northern Sandstone Ridges15.3%
- Northern Limestone/Dolomite Valleys7.9%
- Northern Dissected Ridges and Knobs4.5%
- Uplands and Valleys of Mixed Land Use1.9%
Ridge and Valley in Clinton County
Long, roughly parallel ridges and valleys follow folded and faulted rock layers. Limestone valleys, sandstone ridges and other geologic contrasts produce varied terrain and numerous regional springs and caves.
Read the regional source ↗Central Appalachians in Clinton 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 Clinton County
The atlas lists 43 cities, towns, townships, and Census communities associated with Clinton County, including Chapman, Leidy, Beech Creek. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Clinton County by land and water
The Census records 8.95 square miles of water within Clinton County, or 1% of its total area. That share is close to Clinton County’s 1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Clinton County has 13 times the land area of nearby Grugan township (68.3 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Cameron County, Centre County, Clearfield County, Lycoming County, Potter County, Union County within Pennsylvania. A tract near one of these lines should be matched to the county identifier on its own records.

