THE CUMBERLAND COUNTY LAND BRIEF
Land in the
Northern Limestone/Dolomite Valleys setting.
Cumberland County has 545.5 square miles of land in Pennsylvania. 6 mapped landscape regions meet across Cumberland County: Northern Limestone/Dolomite Valleys, Northern Shale Valleys, Northern Sedimentary and Metasedimentary Ridges, among others.
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.
Regional context: Ridge and Valley ↗ · Regional mapping across the county footprint
Where the landscape changes
Cumberland County intersects 6 mapped regional units. The largest mapped shares are:
- Northern Limestone/Dolomite Valleys41.8%
- Northern Shale Valleys30.3%
- Northern Sedimentary and Metasedimentary Ridges13.9%
- Northern Sandstone Ridges8%
- Northern Igneous Ridges5.3%
Blue Ridge in Cumberland County
Forested ridges, plateaus and high mountains extend through the Blue Ridge. Elevation, rainfall and sheltered coves create marked differences in forest communities across short distances.
Read the regional source ↗Northern Piedmont in Cumberland County
Rounded low hills, open valleys and irregular plains form a transition between Appalachian highlands and the coastal plain. The underlying geology mixes metamorphic, igneous and sedimentary rocks.
Read the regional source ↗Finding your parcel within Cumberland County
The atlas lists 43 cities, towns, townships, and Census communities associated with Cumberland County, including Southampton, South Middleton, Dickinson. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Cumberland County by land and water
The Census records 4.89 square miles of water within Cumberland County, or 0.9% of its total area. That share is close to Cumberland County’s 0.9%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Cumberland County has 844.4 times the land area of nearby Plainfield CDP (0.65 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adams County, Dauphin County, Franklin County, Perry County, York County within Pennsylvania. A tract near one of these lines should be matched to the county identifier on its own records.

