Griffith, IN -- U.S. town in Indiana Population (2000): 17334 Housing Units (2000): 6990 Land area (2000): 7.169677 sq. miles (18.569377 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 7.169677 sq. miles (18.569377 sq. km) FIPS code: 30042 Located within: Indiana (IN), FIPS 18 Location: 41.530835 N, 87.425812 W ZIP Codes (1990): 46319 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Griffith, IN Griffith