THE DONEGAL LAND BRIEF
Land in the
Monongahela Transition Zone setting.
Donegal township has 41.5 square miles of land in Washington County. Its Census reference point is in Monongahela Transition Zone, within Western Allegheny Plateau.
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 ↗ · Classification at the Census reference point
Donegal and Washington County
Donegal is associated with Washington County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Donegal by land and water
The Census records 0.17 square miles of water within Donegal, or 0.4% of its total area. That share is close to Washington County’s 0.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Donegal township has 134.3 times the land area of nearby Claysville borough (0.31 square miles). These areas describe boundaries, not comparable property prices.

