Springfield Township, Union County, New Jersey

Springfield Township is a township in Union County, in the U.S. state of New Jersey. The township is located on a ridge in northern-central New Jersey, within the Raritan Valley and Rahway Valley regions in the New York metropolitan area. As of the 2020 United States census, the township’s population was 17,178, the highest recorded at any decennial census, an increase of 1,361 (+8.6%) from the 2010 census count of 15,817, which in turn reflected an increase of 1,388 (+9.6%) from the 14,429 counted in the 2000 census.