Warren County, NJ — Phillipsburg, Washington & Hackettstown

I-78 East / I-80 / US-22 / NJ-57 / NJ-31

Warren County, NJ forms the New Jersey portion of the Allentown metropolitan area, along the Delaware River opposite Easton PA. Anchored by Phillipsburg (directly opposite Easton across the Delaware, connected by the historic Free Bridge), Washington (the largest town in central Warren County), Hackettstown (home of Centenary University and the Mars confectionery plant), Belvidere (the county seat, on the Delaware River), Oxford, Alpha, Lopatcong Township, Pohatcong Township, Greenwich Township, Franklin Township, Mansfield Township, Independence Township, and Hope Township. The county is characterized by rolling farmland, historic river towns, and scenic ridges.