Phillipsburg is a town located along the Delaware River that is the most populous municipality in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the town's population was 15,249, an increase of 299 (+2.0%) from the 2010 census count of 14,950, which in turn reflected a decline of 216 (−1.4%) from the 15,166 counted in the 2000 census.
The Norfolk Southern Railway's Lehigh Line, formerly the mainline of the Lehigh Valley Railroad with a mix of mainline trackage combined long leased to the Central Railroad of New Jersey by its builder Lehigh Coal & Navigation Company, runs through Phillipsburg and then across the Delaware River into Easton, Pennsylvania. The Belvidere Delaware Railroad was leased in 1871 and later acquired by the Pennsylvania Railroad, connecting the lower Poconos to Trenton, New Jersey, and Philadelphia.
Phillipsburg is located northeast of Allentow