THE PRINCETON JUNCTION LAND BRIEF
Land in the
Triassic Lowlands setting.
Princeton Junction CDP has 1.82 square miles of land in Mercer 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
Princeton Junction and Mercer County
Princeton Junction is associated with Mercer 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.
Princeton Junction by land and water
The Census records 0.03 square miles of water within Princeton Junction, or 1.7% of its total area. It is 0.2 percentage points lower than the 1.9% recorded for Mercer County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Princeton Junction CDP has 2.5 times the land area of nearby Plainsboro Center CDP (0.74 square miles). These areas describe boundaries, not comparable property prices.

