Beach Haven is a borough situated on the Jersey Shore in southern Ocean County, in the U.S. state of New Jersey. The borough is located on Long Beach Island and borders the Atlantic Ocean. As of the 2020 United States census, the borough's population was 1,027, a decrease of 143 from the 2010 census count of 1,170, which in turn reflected a decline of 108 from the 1,278 counted in the 2000 census.