Brooklawn is a borough in Camden County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 1,815, a drop of 140 from the 2010 census enumerati…Brooklawn is a borough in Camden County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 1,815, a drop of 140 from the 2010 census enumeration of 1,955.