Doylestown is a borough and the county seat of Bucks County in the U.S. state of Pennsylvania. It is located 15 miles (24 km) northwest of Trenton, NJ, 25 miles (40 km) south of Easton, PA, 25 mi north of Center City Philadelphia and 65 mi southwest of New York City. As of the 2010 census, the borough population was 8,380.