Lower Alloways Creek Township is a township in Salem County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 1,717, a decrease of 53 (−3.0%) from the 2010 census count of 1,770, which in turn reflected a decline of 81 (−4.4%) from the 1,851 counted in the 2000 census.