Hardin, MT -- U.S. city in Montana Population (2000): 3384 Housing Units (2000): 1411 Land area (2000): 1.400946 sq. miles (3.628433 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.400946 sq. miles (3.628433 sq. km) FIPS code: 34225 Located within: Montana (MT), FIPS 30 Location: 45.731824 N, 107.612542 W ZIP Codes (1990): 59034 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hardin, MT Hardin