St. John, IN -- U.S. town in Indiana Population (2000): 8382 Housing Units (2000): 2847 Land area (2000): 6.724042 sq. miles (17.415187 sq. km) Water area (2000): 0.047889 sq. miles (0.124032 sq. km) Total area (2000): 6.771931 sq. miles (17.539219 sq. km) FIPS code: 66852 Located within: Indiana (IN), FIPS 18 Location: 41.448229 N, 87.476672 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: St. John, IN St. John