High Quality Content by WIKIPEDIA articles! Moorestown is a township in Burlington County, New Jersey, United States and a eastern suburb of Philadelphia. As of the 2010 United States Census, the township population was 20,726, reflecting an increase of 1,709 (+9.0%) from the 19,017 counted in the 2000 Census, which had in turn increased by 2,901 (+18.0%) from the 16,116 counted in the 1990 Census.