Burlington Township is a township in Burlington County, in the U.S. state of New Jersey. It is a suburb of Philadelphia and is part of the South Jersey region of the state. As of the 2020 United States census, the township's population was 23,983, its highest decennial count ever and an increase of 1,389 from the 2010 census count of 22,594, which in tur…Burlington Township is a township in Burlington County, in the U.S. state of New Jersey. It is a suburb of Philadelphia and is part of the South Jersey region of the state. As of the 2020 United States census, the township's population was 23,983, its highest decennial count ever and an increase of 1,389 from the 2010 census count of 22,594, which in turn reflected an increase of 2,300 from the 20,294 counted in the 2000 census. The township, and all of Burlington County, is a part of the Philadelphia-Reading-Camden combined statistical area and the Delaware Valley.