THE UNION LAND BRIEF
Land in the
Northern Limestone/Dolomite Valleys setting.
Union township has 25.5 square miles of land in Mifflin County. Its Census reference point is in Northern Limestone/Dolomite Valleys, within Ridge and Valley.
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 ↗ · Classification at the Census reference point
Union and Mifflin County
Union is associated with Mifflin 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.
Union by land and water
The Census records 0.04 square miles of water within Union, or 0.2% of its total area. It is 0.7 percentage points lower than the 0.9% recorded for Mifflin County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Union township has 12.8 times the land area of nearby Belleville CDP (2 square miles). These areas describe boundaries, not comparable property prices.

