Alpha is a borough in Warren County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 2,328, a decrease of 41 (−1.7%) from the 2010 census count of 2,369, which in turn reflected a decline of 113 (−4.6%) from the 2,482 counted in the 2000 census.

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.