Dayton, MT -- U.S. Census Designated Place in Montana Population (2000): 95 Housing Units (2000): 100 Land area (2000): 0.536798 sq. miles (1.390301 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.536798 sq. miles (1.390301 sq. km) FIPS code: 19525 Located within: Montana (MT), FIPS 30 Location: 47.864979 N, 114.276835 W ZIP Codes (1990): 59914 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dayton, MT Dayton