Cynthiana, IN -- U.S. town in Indiana Population (2000): 693 Housing Units (2000): 286 Land area (2000): 0.401717 sq. miles (1.040442 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.401717 sq. miles (1.040442 sq. km) FIPS code: 16534 Located within: Indiana (IN), FIPS 18 Location: 38.188006 N, 87.706730 W ZIP Codes (1990): 47612 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Cynthiana, IN Cynthiana