THE ERIE COUNTY LAND BRIEF
Land in the
Low Lime Drift Plain setting.
Erie County has 798.9 square miles of land in Pennsylvania. 3 mapped landscape regions meet across Erie County: Low Lime Drift Plain, Erie/Ontario Lake Plain, Mosquito Creek/Pymatuning Lowlands.
Low rounded hills, glacial moraines, kettles and wetland areas define the Erie Drift Plain. Its terrain is more varied than nearby flatter farming regions and less rugged than the unglaciated plateaus.
Regional context: Erie Drift Plain ↗ · Regional mapping across the county footprint
Where the landscape changes
Erie County intersects 3 mapped regional units. The largest mapped shares are:
- Low Lime Drift Plain76.5%
- Erie/Ontario Lake Plain16.8%
- Mosquito Creek/Pymatuning Lowlands6.6%
Eastern Great Lakes Lowlands in Erie County
Glacially shaped lowlands and irregular plains border the Great Lakes and adjacent hills. The lakes influence regional weather, while local landforms reflect both glacial deposits and former shorelines.
Read the regional source ↗Finding your parcel within Erie County
The atlas lists 43 cities, towns, townships, and Census communities associated with Erie County, including Waterford, Washington, Venango. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Erie County by land and water
The Census records 759.2 square miles of water within Erie County, or 48.7% of its total area. That share is close to Erie County’s 48.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Erie County has 41.8 times the land area of nearby Erie city (19.1 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Crawford County, Warren County within Pennsylvania. A tract near one of these lines should be matched to the county identifier on its own records.

