THE UNION LAND BRIEF
Land in the
Triassic Lowlands setting.
Union township has 18.8 square miles of land in Hunterdon County. Its Census reference point is in Triassic Lowlands, within Northern Piedmont.
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 ↗ · Classification at the Census reference point
Union and Hunterdon County
Union is associated with Hunterdon 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 1.86 square miles of water within Union, or 9% of its total area. It is 6.8 percentage points higher than the 2.2% recorded for Hunterdon County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Union township has 13.9 times the land area of nearby Clinton town (1.35 square miles). These areas describe boundaries, not comparable property prices.

