List of counties in South Dakota

There are 66 counties in the U.S. state of South Dakota with FIPS codes, and includes an outline map of the state and a map showing the population density of the counties.

Todd County and Shannon County are two counties in South Dakota that do not have their own county seat. Hot Springs in Fall River County serves as the administrative center of Shannon County. Winner in Tripp County serves as the administrative center of Todd County.[1] It is also one of five South Dakota counties that lie entirely within an Indian reservation. (The others are Corson County, Dewey County, Shannon County, and Ziebach County.)

South Dakota's postal abbreviation is SD and its FIPS state code is 46.

Contents

Table of counties

County
FIPS code
[2]
County seat
[3]
Established
[3]
Formed from
Etymology
Population
[4]
Area
[3]
Map
Aurora County 003 Plankinton 1881 Cragin and Wetmore counties Aurora, Roman goddess of dawn &100000000000027100000002,710 &10000000000000708000000708 sq mi
(&100000000000018340000001,834 km2)
Beadle County 005 Huron 1879 Buchard, Clark, Kingsbury, and Spink counties William Henry Harrison Beadle, chief surveyor of Dakota Territory &1000000000001739800000017,398 &100000000000012590000001,259 sq mi
(&100000000000032610000003,261 km2)
Bennett County 007 Martin 1909 Lugenbeel, Shannon, Washabaugh, and Washington counties Granville G. Bennett, justice of the Supreme Court for the Dakota Territory &100000000000034310000003,431 &100000000000011850000001,185 sq mi
(&100000000000030690000003,069 km2)
Bon Homme County 009 Tyndall 1862 Unorganized territory French word meaning "good man" &100000000000070700000007,070 &10000000000000563000000563 sq mi
(&100000000000014580000001,458 km2)
Brookings County 011 Brookings 1862 Unorganized territory Wilmot Brookings, Dakota Territory Supreme Court justice &1000000000003196500000031,965 &10000000000000794000000794 sq mi
(&100000000000020560000002,056 km2)
Brown County 013 Aberdeen 1879 Beadle County Alfred Brown, territorial legislator &1000000000003653100000036,531 &100000000000017130000001,713 sq mi
(&100000000000044370000004,437 km2)
Brule County 015 Chamberlain 1875 Charles Mix County Brulé Sioux Native Americans &100000000000052550000005,255 &10000000000000819000000819 sq mi
(&100000000000021210000002,121 km2)
Buffalo County 017 Gann Valley 1873 Unorganized territory American Bison &100000000000019120000001,912 &10000000000000471000000471 sq mi
(&100000000000012200000001,220 km2)
Butte County 019 Belle Fourche 1883 Harding Buttes in the region &1000000000001011000000010,110 &100000000000022490000002,249 sq mi
(&100000000000058250000005,825 km2)
Campbell County 021 Mound City 1873 Buffalo Newton B. Campbell, territorial legislator &100000000000014660000001,466 &10000000000000736000000736 sq mi
(&100000000000019060000001,906 km2)
Charles Mix County 023 Lake Andes 1862 Unorganized territory Charles Eli Mix, commisioner of Indian Affairs &100000000000091290000009,129 &100000000000010980000001,098 sq mi
(&100000000000028440000002,844 km2)
Clark County 025 Clark 1873 Hanson Newton Clark, territorial legislator &100000000000036910000003,691 &10000000000000958000000958 sq mi
(&100000000000024810000002,481 km2)
Clay County 027 Vermillion 1862 Unorganized territory Henry Clay, U.S. Senator from Kentucky and prominent 19th Century political figure &1000000000001386400000013,864 &10000000000000412000000412 sq mi
(&100000000000010670000001,067 km2)
Codington County 029 Watertown 1877 Indian lands Reverend G.S. Codington, territorial legislator &1000000000002722700000027,227 &10000000000000688000000688 sq mi
(&100000000000017820000001,782 km2)
Corson County 031 McIntosh 1909 Indian lands Dighton Corson, a Justice of the South Dakota Supreme Court &100000000000040500000004,050 &100000000000024730000002,473 sq mi
(&100000000000064050000006,405 km2)
Custer County 033 Custer 1875 Indian lands General George Armstrong Custer, key figure in the Indian Wars &100000000000082160000008,216 &100000000000015580000001,558 sq mi
(&100000000000040350000004,035 km2)
Davison County 035 Mitchell 1873 Hanson Henry C. Davison, prominent merchant and early settler &1000000000001950400000019,504 &10000000000000436000000436 sq mi
(&100000000000011290000001,129 km2)
Day County 037 Webster 1879 Clark Merrit H. Day, territorial legislator &100000000000057100000005,710 &100000000000010290000001,029 sq mi
(&100000000000026650000002,665 km2)
Deuel County 039 Clear Lake 1862 Brookings Jacob S. Deuel, territorial legislator &100000000000043640000004,364 &10000000000000624000000624 sq mi
(&100000000000016160000001,616 km2)
Dewey County 041 Timber Lake 1873 Armstrong County and Indian lands William P. Dewey, territorial surveyor-general &100000000000053010000005,301 &100000000000023030000002,303 sq mi
(&100000000000059650000005,965 km2)
Douglas County 043 Armour 1873 Charles Mix Stephen A. Douglas, U.S. Senator from Illinois and advocate of popular sovereignty as a middle ground in the slavery debate &100000000000030020000003,002 &10000000000000434000000434 sq mi
(&100000000000011240000001,124 km2)
Edmunds County 045 Ipswich 1873 Buffalo Newton Edmunds, Governor of Dakota Territory &100000000000040710000004,071 &100000000000011460000001,146 sq mi
(&100000000000029680000002,968 km2)
Fall River County 047 Hot Springs 1883 Custer Fall River &100000000000070940000007,094 &100000000000017400000001,740 sq mi
(&100000000000045070000004,507 km2)
Faulk County 049 Faulkton 1873 Unorganized lands Andrew Jackson Faulk, Governor of Dakota Territory &100000000000023640000002,364 &100000000000010000000001,000 sq mi
(&100000000000025900000002,590 km2)
Grant County 051 Milbank 1873 Codington and Deuel counties Ulysses S. Grant, U.S. President and American Civil War general &100000000000073560000007,356 &10000000000000682000000682 sq mi
(&100000000000017660000001,766 km2)
Gregory County 053 Burke 1862 Unorganized territory John Shaw Gregory, territorial legislator &100000000000042710000004,271 &100000000000010160000001,016 sq mi
(&100000000000026310000002,631 km2)
Haakon County 055 Philip 1914 Stanley County King Haakon VII of Norway &100000000000019370000001,937 &100000000000018130000001,813 sq mi
(&100000000000046960000004,696 km2)
Hamlin County 057 Hayti 1873 Deuel County Hannibal Hamlin, Vice-President and United States Senator from Maine &100000000000059030000005,903 &10000000000000511000000511 sq mi
(&100000000000013230000001,323 km2)
Hand County 059 Miller 1873 Buffalo County George H. Hand, territorial legislator &100000000000034310000003,431 &100000000000014370000001,437 sq mi
(&100000000000037220000003,722 km2)
Hanson County 061 Alexandria 1873 Buffalo and Deuel counties Joseph R. Hanson, army major in the Indian Wars and early settler &100000000000033310000003,331 &10000000000000435000000435 sq mi
(&100000000000011270000001,127 km2)
Harding County 063 Buffalo 1909 Unorganized lands J.A. Harding, Speaker of the House for Dakota Territory &100000000000012550000001,255 &100000000000026710000002,671 sq mi
(&100000000000069180000006,918 km2)
Hughes County 065 Pierre 1880 Buffalo County Alexander Hughes, territorial legislator &1000000000001702200000017,022 &10000000000000741000000741 sq mi
(&100000000000019190000001,919 km2)
Hutchinson County 067 Olivet 1862 Unorganized territory John Hutchinson, territorial legislator &100000000000073430000007,343 &10000000000000813000000813 sq mi
(&100000000000021060000002,106 km2)
Hyde County 069 Highmore 1873 Buffalo County James Hyde, territorial legislator &100000000000014200000001,420 &10000000000000861000000861 sq mi
(&100000000000022300000002,230 km2)
Jackson County 071 Kadoka 1914 Stanley County J.R. Jackson, territorial legislator &100000000000030310000003,031 &100000000000018690000001,869 sq mi
(&100000000000048410000004,841 km2)
Jerauld County 073 Wessington Springs 1883 Aurora County H.A. Jerauld, territorial legislator &100000000000020700000002,070 &10000000000000530000000530 sq mi
(&100000000000013730000001,373 km2)
Jones County 075 Murdo 1916 Lyman County George W. Jones, territorial legislator &100000000000010060000001,006 &10000000000000971000000971 sq mi
(&100000000000025150000002,515 km2)
Kingsbury County 077 De Smet 1873 Hanson County George W. Kingsbury and T.A. Kingsbury, brothers and territorial legislators &100000000000051480000005,148 &10000000000000838000000838 sq mi
(&100000000000021700000002,170 km2)
Lake County 079 Madison 1873 Brookings and Hanson counties Lakes within the county &1000000000001120000000011,200 &10000000000000563000000563 sq mi
(&100000000000014580000001,458 km2)
Lawrence County 081 Deadwood 1875 Unorganized territory John Lawrence, territorial legislator &1000000000002409700000024,097 &10000000000000800000000800 sq mi
(&100000000000020720000002,072 km2)
Lincoln County 083 Canton 1867 Unorganized territory Lincoln County, Maine &1000000000004482800000044,828 &10000000000000578000000578 sq mi
(&100000000000014970000001,497 km2)
Lyman County 085 Kennebec 1873 Unorganized territory W.P. Lyman, territorial legislator &100000000000037550000003,755 &100000000000016400000001,640 sq mi
(&100000000000042480000004,248 km2)
Marshall County 091 Britton 1885 Day County Marshall Vincent, Day County Commissioner &100000000000046560000004,656 &10000000000000839000000839 sq mi
(&100000000000021730000002,173 km2)
McCook County 087 Salem 1873 Hanson County Edwin McCook, Secretary of Dakota Territory &100000000000056180000005,618 &10000000000000575000000575 sq mi
(&100000000000014890000001,489 km2)
McPherson County 089 Leola 1873 Buffalo County James B. McPherson, Civil War general &100000000000024590000002,459 &100000000000011370000001,137 sq mi
(&100000000000029450000002,945 km2)
Meade County 093 Sturgis 1889 Lawrence County George Meade, Civil War general &1000000000002543400000025,434 &100000000000034710000003,471 sq mi
(&100000000000089900000008,990 km2)
Mellette County 095 White River 1909 Lyman County Arthur C. Mellette, first Governor of South Dakota &100000000000020480000002,048 &100000000000013070000001,307 sq mi
(&100000000000033850000003,385 km2)
Miner County 097 Howard 1873 Hanson County Nelson Miner and Ephriam Miner, brothers and territorial legislators &100000000000023890000002,389 &10000000000000570000000570 sq mi
(&100000000000014760000001,476 km2)
Minnehaha County 099 Sioux Falls 1862 Unorganized territory Sioux term for waterfall &10000000000169468000000169,468 &10000000000000809000000809 sq mi
(&100000000000020950000002,095 km2)
Moody County 101 Flandreau 1873 Brookings and Minnehaha counties Gideon C. Moody, Speaker of the House for Dakota Territory &100000000000064860000006,486 &10000000000000520000000520 sq mi
(&100000000000013470000001,347 km2)
Pennington County 103 Rapid City 1875 Unorganized territory John L. Pennington, Governor of Dakota Territory &10000000000100948000000100,948 &100000000000027760000002,776 sq mi
(&100000000000071900000007,190 km2)
Perkins County 105 Bison 1909 Butte and Harding counties Henry E. Perkins, state senator &100000000000029820000002,982 &100000000000028720000002,872 sq mi
(&100000000000074380000007,438 km2)
Potter County 107 Gettysburg 1875 Buffalo County Joel A. Potter, territorial legislator &100000000000023290000002,329 &10000000000000866000000866 sq mi
(&100000000000022430000002,243 km2)
Roberts County 109 Sisseton 1883 Grant County S.G. Roberts, territorial legislator &1000000000001014900000010,149 &100000000000011010000001,101 sq mi
(&100000000000028520000002,852 km2)
Sanborn County 111 Woonsocket 1883 Miner County George W. Sanborn, president of the Milwaukee Railroad &100000000000023550000002,355 &10000000000000569000000569 sq mi
(&100000000000014740000001,474 km2)
Shannon County 113 Hot Springs 1875 Fall River County Peter Shannon, territorial legislator &1000000000001358600000013,586 &100000000000020940000002,094 sq mi
(&100000000000054230000005,423 km2)
Spink County 115 Redfield 1873 Hanson County S.L. Spink, Secretary of Dakota Territory &100000000000064510000006,451 &100000000000015040000001,504 sq mi
(&100000000000038950000003,895 km2)
Stanley County 117 Fort Pierre 1873 Unorganized territory David S. Stanley, commander of Fort Sully &100000000000029660000002,966 &100000000000014430000001,443 sq mi
(&100000000000037370000003,737 km2)
Sully County 119 Onida 1873 Potter County Fort Sully, itself named after General Alfred Sully &100000000000013730000001,373 &100000000000010070000001,007 sq mi
(&100000000000026080000002,608 km2)
Todd County 121 Winner 1909 Meyer and Tripp counties John Blair Smith Todd, territorial delegate to Congress &100000000000096120000009,612 &100000000000013880000001,388 sq mi
(&100000000000035950000003,595 km2)
Tripp County 123 Winner 1873 Unorganized territory Bartlett Tripp, Chief Justice of the Dakota Territorial Supreme Court &100000000000056440000005,644 &100000000000016140000001,614 sq mi
(&100000000000041800000004,180 km2)
Turner County 125 Parker 1871 Lincoln County John W. Turner, territorial legislator &100000000000083470000008,347 &10000000000000617000000617 sq mi
(&100000000000015980000001,598 km2)
Union County 127 Elk Point 1862 Unorganized territory The union of the American states &1000000000001439900000014,399 &10000000000000460000000460 sq mi
(&100000000000011910000001,191 km2)
Walworth County 129 Selby 1873 Buffalo County Walworth County, Wisconsin &100000000000054380000005,438 &10000000000000708000000708 sq mi
(&100000000000018340000001,834 km2)
Yankton County 135 Yankton 1862 Unorganized territory Yankton Sioux Native Americans &1000000000002243800000022,438 &10000000000000522000000522 sq mi
(&100000000000013520000001,352 km2)
Ziebach County 137 Dupree 1911 Armstrong, Schnasse, and Sterling counties Frank M. Ziebach, publisher and army major during the Indian Wars &100000000000028010000002,801 &100000000000019620000001,962 sq mi
(&100000000000050820000005,082 km2)

Former counties

Population density map

Darker colors indicate heavier density.

See also

References