Downe Township is a township in Cumberland County, New Jersey, United States. It is part of the Vineland-Millville-Bridgeton Primary Metropolitan Statistical Area for statistical purposes. As of the 2010 United States Census, the township's population was 1,585, reflecting a decline of 46 (-2.8%) from the 1,631 counted in the 2000 Census, which had in turn declined by 71 (-4.2%) from the 1,702 counted in the 1990 Census.
What is now Downe Township was formed by Royal charter on January 19, 1748, as Downes Township, from portions of Fairfield Township. Downe Township was incorporated as one of New Jersey's initial 104 townships by an Act of the New Jersey Legislature on February 21, 1798. Portions of the township were taken to form Commercial Township on February 27, 1874. Downe Township is a dry town where alcohol cannot be sold.