Liberty 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 2,670, a decrease of 272 (−9.2%) from the 2010 census count of 2,942, which in turn reflected an increase of 177 (+6.4%) from the 2,765 counted in the 2000 census.

Hope 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 1,835, a decrease of 117 (−6.0%) from the 2010 census count of 1,952, which in turn reflected an increase of 61 (+3.2%) from the 1,891 counted in the 2000 census. The 2010 population of 1,952 reflected an all-time high since the 1,903 recorded in the 1840 census, the first recorded population after the township was formed.