Laurence Harbor is an unincorporated community and census-designated place located along Raritan Bay within Old Bridge Township, Middlesex County, New Jersey, United States. As of the 2020 United States census, the CDP's population was 6,635, an increase of 99 from the 6,536 recorded at the 2010 census, which in turn reflected an increase of 309 from the 6,227 counted in the 2000 census.