Mansfield Township 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 8,897, an increase of 353 (+4.1%) from the 2010 census count of 8,544, which in turn reflected an increase of 3,454 (+67.9%) from the 5,090 counted in the 2000 census.
