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  • Montana Association of Counties
    2715 Skyway Drive
    Helena, MT 59602
    Phone: (406)449-4360
    Fax: (406)442-5238
    http://www.mtcounties.org

    County NACo
    Member
    2010
    Population
    Square
    Miles
    County Seat Board
    Size
    Founded
    Beaverhead 9,246 5,542 Dillon   1864 
    Big Horn 12,865 4,995 Hardin   1913 
    Blaine 6,491 4,228 Chinook   1895 
    Broadwater 5,612 1,193 Townsend   1897 
    Carbon 10,078 2,049 Red Lodge   1895 
    Carter 1,160 3,341 Ekalaka   1917 
    Cascade 81,327 2,698 Great Falls   1887 
    Chouteau 5,813 3,972 Fort Benton   1865 
    Custer 11,699 3,783 Miles City   1865 
    Daniels 1,751 1,426 Scobey   1920 
    Dawson 8,966 2,372 Glendive   1865 
    Deer Lodge* 9,298 737 Anaconda  1864 
    Fallon 2,890 1,621 Baker   1913 
    Fergus 11,586 4,340 Lewistown   1885 
    Flathead 90,928 5,088 Kalispell   1893 
    Gallatin 89,513 2,603 Bozeman   1864 
    Garfield 1,206 4,675 Jordan   1919 
    Glacier 13,399 2,996 Cut Bank   1919 
    Golden Valley 884 1,175 Ryegate   1920 
    Granite 3,079 1,727 Philipsburg   1893 
    Hill 16,096 2,899 Havre   1912 
    Jefferson 11,406 1,656 Boulder   1864 
    Judith Basin 2,072 1,870 Stanford   1920 
    Lake 28,746 1,490 Polson   1923 
    Lewis And Clark 63,395 3,459 Helena   1864 
    Liberty 2,339 1,430 Chester   1920 
    Lincoln 19,687 3,613 Libby   1909 
    Madison 7,691 3,587 Virginia City   1864 
    McCone 1,734 2,643 Circle   1919 
    Meagher 1,891 2,392 White Sulphur Springs   1867 
    Mineral 4,223 1,219 Superior   1914 
    Missoula 109,299 2,593 Missoula   1864 
    Musselshell 4,538 1,868 Roundup   1911 
    Park 15,636 2,803 Livingston   1887 
    Petroleum 494 1,655 Winnett   1926 
    Phillips 4,253 5,140 Malta   1915 
    Pondera 6,153 1,623 Conrad   1919 
    Powder River 1,743 3,297 Broadus   1919 
    Powell 7,027 2,326 Deer Lodge   1901 
    Prairie 1,179 1,737 Terry   1915 
    Ravalli 40,212 2,391 Hamilton   1893 
    Richland 9,746 2,084 Sidney   1914 
    Roosevelt 10,425 2,355 Wolf Point   1919 
    Rosebud 9,233 5,010 Forsyth   1901 
    Sanders 11,413 2,761 Thompson Falls   1906 
    Sheridan 3,384 1,677 Plentywood   1913 
    Silver Bow* 34,200 718 Butte   12  1881 
    Stillwater 9,117 1,795 Columbus   1913 
    Sweet Grass 3,651 1,855 Big Timber   1895 
    Teton 6,073 2,272 Choteau   1893 
    Toole 5,324 1,916 Shelby   1914 
    Treasure 718 977 Hysham   1919 
    Valley 7,369 4,926 Glasgow   1893 
    Wheatland 2,168 1,423 Harlowton   1917 
    Wibaux 1,017 889 Wibaux   1914 
    Yellowstone 147,972 2,633 Billings   1893 

      * Consolidated City-County Government