Pohatcong Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 3,241,
The name Pohatcong is thought to be derived from the Lenni Lenape Native American term meaning "stream between split hills".
History
Pohatcong Township was officially established in 1881. On March 24, 1881, Chapter 145 of the Acts of the New Jersey General Assembly was published defining and creating Pohatcong Township. The act to form Pohatcong had been introduced by Assemblyman William Fritts and, once law, was to take effect January 1 of the following year. Pohatcong was incorporated on January 1, 1882. It was divided off of Greenwich Township. Pohatcong township's name comes from Lenape Native Americans, who called the area "split hills stream outlet". The industrialized center of the township was separated to form Alpha borough, on April 27, 1911.
Geography
According to the U.S. Census Bureau, the township had a total area of 13.76 square miles (35.63 km<sup>2</sup>), including 13.37 square miles (34.63 km<sup>2</sup>) of land and 0.39 square miles (1.00 km<sup>2</sup>) of water (2.81%).
Finesville (with a 2020 Census population of 364) and Upper Pohatcong (1,714) are unincorporated communities and census-designated places (CDPs) located within the township. Other unincorporated communities, localities and place names located partially or completely within the township include Carpentersville, Hughesville, Huntington, Kennedys, Riegelsville, Springtown, Warren and Warren Glen.
Pohatcong Township borders the municipalities of Greenwich Township, Lopatcong Township and Phillipsburg in Warren County; and Bethlehem Township, Bloomsbury and Holland Township in Hunterdon County. The borough of Alpha is completely surrounded by Pohatcong Township, making it part of 21 pairs of "doughnut towns" in the state, where one municipality entirely surrounds another.