Westampton is a township in Burlington County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 9,121, The township, and all of Burlington County, is a part of the Philadelphia-Reading-Camden combined statistical area and the Delaware Valley.
Westampton was incorporated as a township by an act of the New Jersey Legislature on March 6, 1850, from portions of Northampton Township (now known as Mount Holly Township). Portions of the township were taken to form Eastampton Township on February 11, 1880. Its name derives from its original location in the western portion of what was Northampton Township.
The township is the home of the National Weather Service Weather Forecast Office serving the Philadelphia metropolitan area.
Geography
According to the United States Census Bureau, the township had a total area of 11.10 square miles (28.75 km<sup>2</sup>), including 10.97 square miles (28.42 km<sup>2</sup>) of land and 0.13 square miles (0.33 km<sup>2</sup>) of water (1.15%).
The township borders the Burlington County municipalities of Burlington Township, Eastampton Township, Hainesport Township, Mount Holly, Mount Laurel, Springfield Township and Willingboro Township.