Downe Township is a township in Cumberland County, in the U.S. state of New Jersey. It is part of the Vineland-Bridgeton metropolitan statistical area for statistical purposes. As of the 2020 United States census, the township's population was 1,399, a decrease of 186 (−11.7%) from the 2010 census count of 1,585, which in turn reflected decline of 46 (−2.8%) from the 1,631 counted in the 2000 census.