National Park is a Borough in Gloucester County, New Jersey, United States. As of the United States 2000 Census, 3,205 residents were counted. Despite its name, National Park is not a national park nor is it associated with one. The area was commercially developed starting in 1895 as National Park on the Delaware, a religious resort / retreat community for members of the Methodist Episcopal Church. National Park was formed as a borough by an Act of the New Jersey Legislature on April 15, 1902, from portions of West Deptford Township.