Harvey Cedars is a coastal borough situated on the Jersey Shore, in southern Ocean County, in the U.S. state of New Jersey. The borough encompasses a narrow strip of Long Beach Island fronting both the Atlantic Ocean and Barnegat Bay. As of the 2020 United States census, the borough's population was 391, its highest decennial count ever a…Harvey Cedars is a coastal borough situated on the Jersey Shore, in southern Ocean County, in the U.S. state of New Jersey. The borough encompasses a narrow strip of Long Beach Island fronting both the Atlantic Ocean and Barnegat Bay. As of the 2020 United States census, the borough's population was 391, its highest decennial count ever and an increase of 54 from the 2010 census count of 337, which in turn reflected a decline of 22 from the 359 counted in the 2000 census.