New Jersey lies between 73° 55′ and 75° 32′ west longitude and between
38° 56′ and 41° 21′ north latitude. Its northernmost point is marked by
a rock on the shore of the Delaware River just south of Port Jervis,
New York, known as Tri-States Rock. From this point to Cape May the
length of the state is 166 miles. Its narrowest part, between Trenton
and Raritan Bay, is 335 miles wide. Its widest part, measured on a line
extending northwest from Great Egg Inlet, is 57 miles wide.
It is the smallest of the Middle Atlantic states and has an area of
8224 square miles, of which 7514 square miles are land surface and 710
square miles are water surface. It is the forty-fifth of the states in
size.