

Unincorporated communities, localities and place names located partially or completely within the township include Acton, Claysville, Halltown, Marshalltown, Pointers, Portertown, Slapes Corner, Welchtown and Welchville. The township borders the Salem County municipalities of Alloway Township, Carneys Point Township, Pennsville Township, Pilesgrove Township, Quinton Township and Salem. The Salem River flows along the township's northern and western boundaries. Īmong the oldest buildings are Barrett's Plantation House and the Salem County Insane Asylum.Īccording to the United States Census Bureau, the township had a total area of 37.90 square miles (98.17 km 2), including 33.88 square miles (87.76 km 2) of land and 4.02 square miles (10.41 km 2) of water (10.61%). Īs a dry town, the sale of alcohol is not legally permitted. The township's name derives from the Lenape deity, variously spelled as Maneto or Manito. A portion of the township was taken in 1878 and annexed by Quinton Township. The township was incorporated by New Jersey Legislature's Township Act of 1798 on February 21, 1798, as one of New Jersey's original group of 104 townships. It had been previously known as East Fenwick Township, which was mentioned on September 3, 1679, though the details of its incorporation are unknown. Mannington Township was first mentioned on May 12, 1701. As of the 2020 United States census, the township's population was 1,475, a decrease of 331 (−18.3%) from the 2010 census count of 1,806, which in turn reflected an increase of 247 (+15.8%) from the 1,559 counted in the 2000 census. Mannington Township is a township in Salem County, in the U.S.
