Uniondale, IN -- U.S. town in Indiana Population (2000): 277 Housing Units (2000): 115 Land area (2000): 0.216248 sq. miles (0.560081 sq. km) Water area (2000): 0.001342 sq. miles (0.003476 sq. km) Total area (2000): 0.217590 sq. miles (0.563557 sq. km) FIPS code: 77786 Located within: Indiana (IN), FIPS 18 Location: 40.829457 N, 85.242633 W ZIP Codes (1990): 46791 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Uniondale, IN Uniondale