Southampton Township is a township in Burlington County, New Jersey, United States. As of the 2010 United States Census, the township's population was 10,464 reflecting an increase of 76 (+0.7%) from the 10,388 counted in the 2000 Census, which had in turn increased by 186 (+1.8%) from the 10,202 counted in the 1990 Census.
What is now Southampton was originally incorporated as Coaxen Township by an act of the New Jersey Legislature on March 10, 1845, from portions of Northampton Township (now known as Mount Holly Township). The name lasted for about three weeks when it was renamed Southampton Township on April 1, 1845. As the population increased, portions of the township were taken to form Pemberton Township (March 10, 1846), Shamong Township (February 19, 1852), Lumberton Township (March 14, 1860), Woodland Township (March 7, 1866) and Tabernacle Township (March 22, 1901).
According to the United States Census Bureau, the township had a total area of 44.44 square miles (115.10 km2), including 43.96 square miles (113.85 km2) of land and 0.48 square miles (1.25 km2) of water (1.08%). The township is located within the New Jersey Pine Barrens.
Leisuretowne (2010 Census population of 3,582) is an unincorporated community and census-designated place (CDP) located within Southampton Township. Vincentown is an unincorporated area and ZIP Code 08088 within portions of the township, while other unincorporated communities, localities and place names located partially or completely within the township include Beaverville, Buddtown, Burrs Mill, Chairville, Crescent Heights, Ewansville, Ewingville, Hampton Lakes, Medford Park, Oak Shade, Red Lion, Retreat and Sandtown.
The township borders the Burlington County municipalities of Eastampton Township, Lumberton Township, Medford Township, Pemberton Township, Tabernacle Township and Woodland Township.
The township is one of 56 South Jersey municipalities that are included within the New Jersey Pinelands National Reserve, a protected natural area of unique ecology covering 1,100,000 acres (450,000 ha), that has been classified as a United States Biosphere Reserve and established by Congress in 1978 as the nation's first National Reserve. Part of the township is included in the state-designated Pinelands Area, which includes portions of Burlington County, along with areas in Atlantic, Camden, Cape May, Cumberland, Gloucester and Ocean counties.
The 2010 United States Census counted 10,464 people, 4,746 households, and 3,042 families in the township. The population density was 239.6 inhabitants per square mile (92.5/km2). There were 5,024 housing units at an average density of 115.1 per square mile (44.4/km2). The racial makeup was 94.50% (9,888) White, 2.21% (231) Black or African American, 0.11% (12) Native American, 1.33% (139) Asian, 0.01% (1) Pacific Islander, 0.49% (51) from other races, and 1.36% (142) from two or more races.