Hammonton, NJ -- U.S. town in New Jersey Population (2000): 12604 Housing Units (2000): 4843 Land area (2000): 41.259602 sq. miles (106.861875 sq. km) Water area (2000): 0.213008 sq. miles (0.551687 sq. km) Total area (2000): 41.472610 sq. miles (107.413562 sq. km) FIPS code: 29430 Located within: New Jersey (NJ), FIPS 34 Location: 39.641181 N, 74.786162 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hammonton, NJ Hammonton