THE YORK COUNTY LAND BRIEF
Land in the
Piedmont Uplands setting.
York County has 904.4 square miles of land in Pennsylvania. 7 mapped landscape regions meet across York County: Piedmont Uplands, Triassic Lowlands, Trap Rock and Conglomerate Uplands, among others.
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.
Regional context: Northern Piedmont ↗ · Regional mapping across the county footprint
Where the landscape changes
York County intersects 7 mapped regional units. The largest mapped shares are:
- Piedmont Uplands58.7%
- Triassic Lowlands20.8%
- Trap Rock and Conglomerate Uplands10.6%
- Piedmont Limestone/Dolomite Lowlands8.3%
- Northern Limestone/Dolomite Valleys0.7%
Ridge and Valley in York 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 ↗Blue Ridge in York 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 ↗Finding your parcel within York County
The atlas lists 91 cities, towns, townships, and Census communities associated with York County, including Chanceford, Dover, Lower Chanceford. The list includes overlapping geography types and does not divide the county into exclusive service areas.
York County by land and water
The Census records 6.37 square miles of water within York County, or 0.7% of its total area. That share is close to York County’s 0.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, York County has 433.7 times the land area of nearby Grantley CDP (2.09 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adams County, Cumberland County, Dauphin County, Lancaster County within Pennsylvania. A tract near one of these lines should be matched to the county identifier on its own records.

