Sponsored Topics. Quakertown is a borough in Bucks County, Pennsylvania, in the United States. As of the 2010 census, it had a population of 8,979. The borough is 16 miles (26 km) south of Bethlehem and 29 miles (47 km) north of Philadelphia, making Quakertown a border town of both the Delaware Valley and Lehigh Valley metropolitan areas. Quakertown is considered part of the Allentown–Bethlehem urbanized area and the Philadelphia–Camden–Vineland (PA–NJ–DE) MSA.