Hope Township is a Township in Warren County, New Jersey, United States. As of the United States 2010 Census, the township population was 1,952. The township is located in the Kittatinny Valley which is a section of the 700 mile long Great Appalachian Valley that stretches from Canada to Alabama.
Hope Township was incorporated as a township by an Act of the New Jersey Legislature on April 8, 1839, from portions of Knowlton Township and Oxford Township, based on the results of a referendum held that day. Liberty Township was created March 25, 1926, from portions of the township.
According to the United States Census Bureau, the township has a total area of 18.7 square miles (48.4 km²), of which, 18.5 square miles (47.9 km²) of it is land and 0.2 square miles (0.5 km²) of it (0.96%) is water.