Minnesota

Aiken County (1857 - Present)
Anoka County (1857 - Present)
Becker County (1858 - Present)
Beltrami County (1866 - Present)
Benton County (1849 - Present)
Big Sioux County (1857 - 1858)
Big Stone County (1862 - Present)
Blue Earth County (1853 - Present)
Breckenridge County (1858 - Present)
Brown County (1855 - Present)
Buchanan County (1857 - 1861)
Canby County Proposed (1879 - 1879)
Carlton County (1857 - Present)
Carver County (1855 - Present)
Cass County (1851 - Present)
Chippewa County (1862 - Present)
Chisago County (1851 - Present)
Clearwater County (1902 - Present)
Columbia County (1902 - 1903)
Cook County (1874 - Present)
Cottonwood County (1857 - Present)
Crow Wing County (1857 - Present)
Dakota County (1849 - Present)
Davis County (1855 - 1862)
Dodge County (1855 - Present)
Doty County (1855 - 1856)
Douglas County (1858 - Present)
Faribault County (1855 - Present)
Fillmore County (1853 - Present)
Freeborn County (1855 - Present)
Goodhue County (1853 - Present)
Grant County (1868 - Present)
Hennepin County (1852 - Present)
Hill County Proposed (1896 - 1896)
Houston County (1854 - Present)
Hubbard County (1883 - Present)
Isanti County (1857 - Present)
Itasca County (1849 - Present)
Jackson County (1857 - Present)
Kanabec County (1858 - Present)
Kandiyohi County (1858 - Present)
Koochiching County (1906 - Present)
Lac Qui Parle County (1871 - Present)
Lake Of The Woods County (1922 - Present)
Le Sueur County (1853 - Present)
Lincoln County (1873 - Present)
Lyon County (1869 - Present)
Lyon County Proposed (1868 - 1868)
Mahkahto County (1849 - 1851)
Mahnomen County (1906 - Present)
Manomin County (1857 - 1869)
Marshall County (1879 - Present)
Martin County (1857 - Present)
Mcleod County (1856 - Present)
Meeker County (1856 - Present)
Midway County (1857 - 1858)
Mille Lacs County (1857 - Present)
Monongalia County (1861 - 1870)
Monroe County Proposed (1858 - 1858)
Morrison County (1856 - Present)
Mower County (1855 - Present)
Murray County (1857 - Present)
Nelson County Proposed (1896 - 1896)
Nelson County Proposed (1902 - 1902)
Nicollet County (1853 - Present)
Nobles County (1857 - Present)
Norman County (1881 - Present)
Olmsted County (1855 - Present)
Otter Tail County (1858 - Present)
Pembina County (1849 - Present)
Pennington County (1910 - Present)
Pierce County (1853 - 1862)
Pine County (1856 - Present)
Pipestone County (1857 - Present)
Polk County (1858 - Present)
Pope County (1862 - Present)
Ramsey County (1849 - Present)
Red Lake County (1896 - Present)
Redwood County (1862 - Present)
Renville County (1855 - Present)
Rice County (1853 - Present)
Ripley County Proposed (1860 - 1860)
Rock County (1857 - Present)
Roseau County (1894 - Present)
Scott County (1853 - Present)
Seward County Proposed (1874 - 1874)
Sherburne County (1856 - Present)
Sibley County (1853 - Present)
St Louis County (1856 - Present)
Star County Proposed (1902 - 1902)
Stearns County (1855 - Present)
Steele County (1855 - Present)
Stevens County (1862 - Present)
Superior County (1855 - Present)
Swift County (1870 - Present)
Todd County (1855 - Present)
Toombs County (1858 - Present)
Traverse County (1862 - Present)
Valley County Proposed (1902 - 1902)
Wabasha County (1849 - Present)
Wadena County (1858 - Present)
Wahnahta County (1849 - 1851)
Waseca County (1857 - Present)
Washington County (1849 - Present)
Watonwan County (1860 - Present)
Winona County (1854 - Present)
Wright County (1855 - Present)
Yellow Medicine County (1871 - Present)