Barnegat Light is a borough in Ocean County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 640, an increase of 66 from the 2010 census count of 574, which in turn reflected a decline of 190 from the 764 counted in the 2000 census. The borough borders the Atlantic Ocean on Long Beach Island and is home to Barnegat Lighthouse.