Long Beach Township is a Walsh Act Township situated on the Jersey Shore, in southeastern Ocean County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 3,153, an increase of 102 (+3.3%) from the 2010 census count of 3,051, which in turn reflected a decline of 278 (−8.4%) from the 3,329 counted in the 2000 census.