Washington (Warren County, N.J.

Washington Township is a township in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 6,492, a decrease of 159 (−2.4%) from the 2010 census count of 6,651, which in turn reflected an increase of 403 (+6.5%) from the 6,248 counted in the 2000 census. The township is one of six municipalities in New Jersey under the name Washington (one of which is a borough, five of which are townships). Washington Township, Warren County completely surrounds the borough of Washington. Mansfield Township, also in Warren County, borders both this municipality and another Washington Township in Morris County. Washington Township was incorporated as a township by an act of the New Jersey Legislature on April 9, 1849, from portions of Mansfield Township. Portions of the township were taken on February 20, 1868, to create Washington Borough. The township was named for George Washington, one of more than ten communities statewide named for the first president. It is one of five municipalities in the state of New Jersey with the name "Washington Township". Another municipality, Washington Borough, is completely surrounded by Washington Township.