Alton, IN -- U.S. town in Indiana Population (2000): 53 Housing Units (2000): 65 Land area (2000): 0.169694 sq. miles (0.439506 sq. km) Water area (2000): 0.024508 sq. miles (0.063475 sq. km) Total area (2000): 0.194202 sq. miles (0.502981 sq. km) FIPS code: 01270 Located within: Indiana (IN), FIPS 18 Location: 38.122715 N, 86.419920 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Alton, IN Alton