Basalt, ID -- U.S. city in Idaho Population (2000): 419 Housing Units (2000): 133 Land area (2000): 0.287416 sq. miles (0.744405 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.287416 sq. miles (0.744405 sq. km) FIPS code: 05230 Located within: Idaho (ID), FIPS 16 Location: 43.314270 N, 112.163571 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Basalt, ID Basalt