THE ISELIN LAND BRIEF
Land in the
Glaciated Triassic Lowlands setting.
Iselin CDP has 3.15 square miles of land in Middlesex County. Its Census reference point is in Glaciated 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
Iselin and Middlesex County
Iselin is associated with Middlesex 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.
Iselin by land and water
The Census records <0.01 square miles of water within Iselin, or 0% of its total area. It is 4.2 percentage points lower than the 4.2% recorded for Middlesex County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Iselin CDP has 8.5 times the land area of nearby Menlo Park Terrace CDP (0.37 square miles). These areas describe boundaries, not comparable property prices.

