Montana County Creation Dates and Parent CountiesEdit This Page

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Name of County Date Formed Boundary
Changes
Parent County Counties Created by Boundary Changes
Beaverhead 1865 Feb 02 Details Montana Territory none
Big Horn 1913 Jan 13 Details Rosebud, Yellowstone Tresaure 1919
Blaine 1912 Feb 29 Details Chouteau, Hill none
Broadwater 1897 Feb 09 Details Jefferson, Meagher none
Carbon 1895 Mar 04 Details Park, Yellowstone none
Carter 1917 Feb 22 Details Custer Powder River 1919
Cascade 1887 Sep 12 Details Chouteau, Meagher Judith Basin 1920
Chouteau 1865 Feb 02 Details Montana Territory Blaine 1912, Cascasde 1887, Hill 1912, Liberty 1920, Pondera 1919, Teton 1893
Custer 1865 Feb 02 Details Montana Territory Carter 1917, Fallon 1913, Prairie 1915, Sheridan 1913, Yellowstone 1883
Daniels 1920 Aug 30 Details Valley, Sheridan none
Dawson 1869 Jan 15 Details Montana Territory McCone 1919, Richland 1914, Rosebud 1901, Valley 1893, Wibaux 1914
Deer Lodge 1865 Feb 02 Details Montana Territory Granite 1893, Silver Bow 1881
Edgerton 1865 Feb 02 Details Montana Territory renamed Lewis and Clark 1867
Fallon 1913 Dec 09 Details Custer none
Fergus 1885 Mar 12 Details Meagher Judith Basin 1920, Musselshell 1911, Petroleum 1924
Flathead 1893 Feb 06 Details Missoula Lake 1923, Lincoln 1909
Gallatin 1865 Feb 02 Details Montana Territory Park 1887, Yellowstone 1883
Garfield 1919 Feb 07 Details Valley, McCone Petroleum 1924
Glacier 1919 Feb 17 Details Teton none
Golden Valley 1920 Oct 04 Details Musselshell none
Granite 1893 Mar 02 Details Deer Lodge none
Hill 1912 Feb 28 Details Chouteau Blaine 1912, Liberty 1920
Jefferson 1865 Feb 02 Details Montana Territory Broadwater 1897
Judith Basin 1920 Dec 10 Details Ferguson, Cascade none
Lake 1923 May 11 Details Flathead, Missoula none
Lewis and Clark 1867 Dec 20 Details renamed from Edgerton none
Liberty 1920 Feb 11 Details Chouteau, Hill none
Lincoln 1909 Mar 09 Details Flathead none
Madison 1865 Feb 02 Details Montana Territory none
McCone 1919 Feb 20 Details Dawson, Richland Garfield 1919
Meagher 1867 Nov 16 Details Montana Territory Broadwater 1897, Cascade 1887, Fergus 1885, Sweet Grass 1895, Wheatland 1917, Yellowstone 1883
Mineral 1914 Aug 07 Details Missoula none
Missoula 1865 Feb 02 Details Montana Territory Flathead 1893, Lake 1923, Mineral 1914, Powell 1901, Ravalli 1893, Sanders 1905
Musselshell 1911 Feb 11 Details Fergus, Yellowstone Golden Valley 1920
Park 1887 Feb 23 Details Gallatin Carbon 1895, Sweet Grass 1895
Petroleum 1924 Nov 24 Details Fergus, Garfield none
Phillips 1915 Feb 05 Details Valley none
Pondera 1919 Feb 17 Details Chouteau none
Powder River 1919 Mar 07 Details Custer none
Powell 1901 Jan 31 Details Missoula none
Prairie 1915 Feb 05 Details Custer none
Ravalli 1893 Feb 16 Details Missoula none
Richland 1914 May 27 Details Dawson McCone 1919, Roosevelt 1919
Roosevelt 1919 Feb 18 Details Valley, Richland none
Rosebud 1901 Feb 11 Details Dawson Big Horn 1913
Sanders 1905 Feb 07 Details Missoula none
Sheridan 1913 Mar 24 Details Custer Daniels 1920
Silver Bow 1881 Feb 16 Details Deer Lodge none
Stillwater 1913 Mar 24 Details Sweet Grass, Yellowstone none
Teton 1893 Feb 07 Details Chouteau Glacier 1919, Toole 1914
Toole 1914 May 07 Details Teton none
Treasure 1919 Feb 07 Details Big Horn none
Valley 1893 Feb 06 Details Dawson Daniels 1920, Garfield 1919, Phillips 1915, Roosevelt 1919
Wheatland 1917 Feb 22 Details Meagher, Sweet Grass none
Wibaux 1914 Aug 17 Details Dawson none
Yellowstone 1883 Feb 26 Details Gallatin, Meagher, Custer Rosebud 1913, Carbon 1895, Sweet Grass 1895, Musselshell 1911, Stillwater 1913

References

  1. [http://historical-county.newberry.org/website/Montana/viewer.htm Montana Atlas of Historical County Boundaries, John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Gordon DenBoer, Historical Compiler; Douglas Knox, Book Digitizing Director and Digital Compiler; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant. Copyright The Newberry Library 2008.

 

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  • This page was last modified on 11 December 2015, at 02:32.
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