Troy, MT -- U.S. city in Montana Population (2000): 957 Housing Units (2000): 469 Land area (2000): 0.758193 sq. miles (1.963712 sq. km) Water area (2000): 0.017392 sq. miles (0.045045 sq. km) Total area (2000): 0.775585 sq. miles (2.008757 sq. km) FIPS code: 75025 Located within: Montana (MT), FIPS 30 Location: 48.459944 N, 115.890974 W ZIP Codes (1990): 59935 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Troy, MT Troy