THE DILLONVALE LAND BRIEF
Land in the
Monongahela Transition Zone setting.
Dillonvale village has 0.39 square miles of land in Jefferson 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
Dillonvale and Jefferson County
Dillonvale is associated with Jefferson 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.
Dillonvale by land and water
The Census records <0.01 square miles of water within Dillonvale, or 2% of its total area. It is 1.3 percentage points higher than the 0.7% recorded for Jefferson County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Dillonvale village has 1.5 times the land area of nearby Mount Pleasant village (0.26 square miles). These areas describe boundaries, not comparable property prices.

