South Dakota County Creation Dates and Parent Counties

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 * style="background: rgb(240,240,240); moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial" align="center" | Name of County
 * style="background: rgb(240,240,240); moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial" align="center" | Date Formed
 * style="background: rgb(240,240,240); moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial" align="center" | Parent County
 * style="background: rgb(240,240,240); moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial" align="center" | Progeny County
 * Armstrong
 * nowrap="nowrap" | 08 Jan 1873
 * Dakota Territory
 * Ziebach 1911, dissolved 1912
 * Aurora
 * 22 Feb 1879
 * Brule
 * Jerauld 1883
 * Beadle
 * 22 Feb 1879
 * Spink, Clark
 * Brown 1879
 * Bennet
 * 09 Mar 1909
 * Indian lands
 * none
 * Bon Homme
 * 05 Apr 1862
 * Charles Mix
 * none
 * Brookings
 * 05 Apr 1862
 * Dakota Territory
 * Devel 1873, Lake 1873, Moody 1873
 * Buffalo
 * 08 Jan 1873
 * Dakota Territory
 * Burle 1875, Campbell 1873, Edmunds 1873, Hand 1873, Hanson 1871, Hughes 1874, Hyde 1873, McPherson 1873, Potter 1875, Walworth 1873
 * Brule
 * 14 Jan 1875
 * Dakota Territory
 * Aurora 1879
 * Butte
 * 02 Mar 1883
 * Harding
 * Perkins 1909
 * Campbell
 * 08 Jan 1873
 * Buffalo
 * none
 * Brown
 * 22 feb1879
 * Beadle
 * none
 * Charles Mix
 * 08 May 1862
 * Dakota Territory
 * Bon Homme 1862, Douglas 1873
 * Clark
 * 08 Jan 1873
 * Hanson
 * Beadle 1879, Day 1879
 * Clay
 * 10 Apr 1862
 * Dakota Territory
 * none
 * Codington
 * 1877
 * Indian lands
 * none
 * Cole
 * 10 Jan 1862
 * Dakota Territory
 * renamed Union 1864
 * Carson
 * 02 Mar 1909
 * Indian lands
 * none
 * Custer
 * 11 Jan 1857
 * Indian lands
 * Fall River 1883
 * Davison
 * 08 Jan 1873
 * Hanson
 * none
 * Day
 * 22 Feb 1879
 * Clark
 * Marshall 1885
 * Deuel
 * 08 Jan 1873
 * Brookings
 * Hamlin 1873, Hanson 1871
 * Dewey
 * 09 Mar 1883
 * nowrap="nowrap" | renamed from Rusk
 * none
 * Douglas
 * 08 Jan 1837
 * Charles Mix
 * none
 * Edmunds
 * 08 Jan 1873
 * Buffalo
 * none
 * Fall River
 * 06 Mar 1883
 * Custer
 * none
 * Faulk
 * 08 Jan 1873
 * Dakota Territory
 * none
 * Grant
 * 08 Jan 1873
 * Codington, Deuel
 * Roberts 1883
 * Gregory
 * 08 May 1862
 * Yankton
 * none
 * Haakon
 * 1914
 * Stanley
 * none
 * Hamlin
 * 08 Jan 1873
 * Deuel
 * none
 * Hand
 * 08 Jan 1873
 * Buffalo
 * none
 * Hanson
 * 13 Jan 1871
 * Buffalo, Deuel
 * Clark 1873, Davidson 1873, Kingsbury 1873, Lake 1873, McCook 1873, Miner 1873, Spink 1873
 * Harding
 * 26 Feb 1909
 * Dakota Territory
 * Butte 1883, Perkins 1909
 * Hughes
 * 08 Jan 1874
 * Buffalo
 * none
 * Hutchinson
 * 08 May 1862
 * Dakota Territory
 * none
 * Hyde
 * 08 Jan 1873
 * Buffalo
 * none
 * Jackson
 * 1914
 * Stanley
 * none
 * Jerauld
 * 09 Mar 1883
 * Aurora
 * none
 * Jones
 * 1916
 * Lyman
 * none
 * Kingsbury
 * 08 Jan 1873
 * Hanson
 * none
 * Lake
 * 08 Jan 1873
 * Brookings, Hanson
 * none
 * Lawrence
 * 11 Jan 1873
 * Dakota Territory
 * Meade 1889
 * Lincoln
 * 05 Apr 1862
 * Minnehaha
 * Turner 1871
 * Lyman
 * 08 Jan 1873
 * Dakota Territory
 * Jones 1916, Mellette 1909
 * Marshall
 * 10 Mar 1885
 * Day
 * none
 * McCook
 * 08 Jan 1873
 * Hanson
 * none
 * McPherson
 * 08 Jan 1873
 * Buffalo
 * none
 * Meade
 * 07 Feb 1889
 * Lawrence
 * none
 * Mellette
 * 09 Mar 1909
 * Lyman
 * none
 * Miner
 * 08 Jan 1873
 * Hanson
 * Sanborn 1883
 * Minnehaha
 * 05 Apr 1862
 * Dakota Territory
 * Lincoln 1862, Moody 1873
 * Moody
 * 08 Jan 1873
 * Minnehaha, Brookings
 * none
 * Pennington
 * 11 Jan 1875
 * Dakota Territory
 * none
 * Perkins
 * 26 Feb 1909
 * Harding, Butte
 * none
 * Potter
 * 14 Jan 1875
 * Buffalo
 * Sully 1873
 * Roberts
 * 08 Mar 1883
 * Grant
 * none
 * Rusk
 * 08 Jan 1873
 * Dakota Territory
 * renamed Dewey 1883
 * Sanborn
 * 09 Mar 1883
 * Miner
 * none
 * Shannon
 * 11 Jan 1875
 * Fall River
 * none
 * Spink
 * 08 jan 1873
 * Hanson
 * Beadle 1879
 * Stanley
 * 08 Jan 1873
 * Dakota Territory
 * Haakon 1914, Jackson 1914
 * Sully
 * 08 Jan 1873
 * Potter
 * none
 * Todd
 * 09 Mar 1909
 * nowrap="nowrap" | Rosebud Indian Reservation
 * conterminous with the reservation
 * Tripp
 * 08 Jan 1873
 * Dakota Territory
 * none
 * Union
 * 07 Jan 1864
 * renamed from Cole
 * none
 * Walworth
 * 08 Jan 1873
 * Buffalo
 * none
 * Washabaugh
 * 09 Mar 1883
 * Dakota Territory
 * none
 * Washington
 * 09 Mar 1883
 * Dakota Territory
 * abolished
 * Yankton
 * 10 Apr 1862
 * Dakota Territory
 * Gregory 1862
 * Ziebach
 * 01 Feb 1911
 * Armstrong
 * none
 * }
 * Rusk
 * 08 Jan 1873
 * Dakota Territory
 * renamed Dewey 1883
 * Sanborn
 * 09 Mar 1883
 * Miner
 * none
 * Shannon
 * 11 Jan 1875
 * Fall River
 * none
 * Spink
 * 08 jan 1873
 * Hanson
 * Beadle 1879
 * Stanley
 * 08 Jan 1873
 * Dakota Territory
 * Haakon 1914, Jackson 1914
 * Sully
 * 08 Jan 1873
 * Potter
 * none
 * Todd
 * 09 Mar 1909
 * nowrap="nowrap" | Rosebud Indian Reservation
 * conterminous with the reservation
 * Tripp
 * 08 Jan 1873
 * Dakota Territory
 * none
 * Union
 * 07 Jan 1864
 * renamed from Cole
 * none
 * Walworth
 * 08 Jan 1873
 * Buffalo
 * none
 * Washabaugh
 * 09 Mar 1883
 * Dakota Territory
 * none
 * Washington
 * 09 Mar 1883
 * Dakota Territory
 * abolished
 * Yankton
 * 10 Apr 1862
 * Dakota Territory
 * Gregory 1862
 * Ziebach
 * 01 Feb 1911
 * Armstrong
 * none
 * }
 * 09 Mar 1883
 * Dakota Territory
 * abolished
 * Yankton
 * 10 Apr 1862
 * Dakota Territory
 * Gregory 1862
 * Ziebach
 * 01 Feb 1911
 * Armstrong
 * none
 * }
 * none
 * }