The County of Warren occupies an area of 364.55 square miles, is 32 miles long, and has an average width of 13 miles. It ranks ninth in the area and 19th in population among New Jersey’s 21 counties. Within the county is some of the most rugged and scenic terrain found in the state. The landscape is characterized by a series of ridges and valleys in a northeasterly/southwesterly direction. Elevations range from 125 feet to 1,600 feet above sea level. Mountain ranges and ridges that divide the county’s fertile river valleys include Kittatinny Mountain, Jenny Jump Mountain, Scott’s Mountain, and Pohatcong Mountain. Streams and rivers, all emptying into the Delaware River, including the Musconetcong, Paulinskill, and Pequest rivers; Dunnfield, Lopatcong, and Pohatcong creeks; and Van Campens Brook. Fertile valleys have enabled the county to become an important agricultural district in the Garden State.

A view across Warren County with the Delaware Water Gap in the background.