Beach Haven is a borough in Ocean County, New Jersey, United States, that is located on Long Beach Island (LBI) and borders the Atlantic Ocean. As of the 2010 United States Census, the borough's population was 1,170, reflecting a decline of 108 (-8.5%) from the 1,278 counted in the 2000 Census, which had in turn declined by 197 (-13.4%) from the 1,475 counted in the 1990 Census.