Berlin 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 7,489, a decrease of 99 (−1.3%) from the 2010 census count of 7,588, which in turn reflected an increase of 1,439 (+23.4%) from the 6,149 counted in the 2000 census.

Berlin Township is a township in Camden County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 5,867, an increase of 510 (+9.5%) from the 2010 census count of 5,357, which in turn reflected an increase of 67 (+1.3%) from the 5,290 counted in the 2000 census.