THE BLACKWELLS MILLS LAND BRIEF
Land in the
Triassic Lowlands setting.
Blackwells Mills CDP has 7.68 square miles of land in Somerset 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
Blackwells Mills and Somerset County
Blackwells Mills is associated with Somerset 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.
Blackwells Mills by land and water
The Census records 0.12 square miles of water within Blackwells Mills, or 1.6% of its total area. It is 0.6 percentage points higher than the 1% recorded for Somerset County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Blackwells Mills CDP has 11.3 times the land area of nearby Millstone borough (0.68 square miles). These areas describe boundaries, not comparable property prices.

