Salem -- U.S. County in New Jersey Population (2000): 64285 Housing Units (2000): 26158 Land area (2000): 337.879999 sq. miles (875.105142 sq. km) Water area (2000): 34.690849 sq. miles (89.848883 sq. km) Total area (2000): 372.570848 sq. miles (964.954025 sq. km) Located within: New Jersey (NJ), FIPS 34 Location: 39.628764 N, 75.385539 W Headwords: Salem Salem, NJ Salem County Salem County, NJ