Westampton is a township in Burlington County, New Jersey, United States. As of the 2010 United States Census, the township's population was 8,813 reflecting an increase of 1,596 (+22.1%) from the 7,217 counted in the 2000 Census, which had in turn increased by 1,213 (+20.2%) from the 6,004 counted in the 1990 Census. The township is the home of the National Weather Service Weather Forecast Office serving the Philadelphia metropolitan area.