States101 
South Dakota
State Facts
There are more men than women in South Dakota. The overall gender ratio is 101 men to 100 women.
The South Dakota flag was adopted on November 9, 1992. The flag has been ranked the 53rd best U.S. flag by a leading Vexillology Organization.
The South Dakota quarter was the 40th quarter released overall. The quarter was released on November 6, 2006.
Recent estimates put South Dakota's population at around 853,000 people (47th out of 56).The population density is 11.3 people per square mile (52nd out of 56).
Someone from South Dakota is known as a South Dakotan. View our List of Adjectival and Demonyms for all the States.
South Dakota was the 40th state when it joined the United States on November 2, 1889. Prior to 1889, South Dakota was known as "Dakota Territory."
Essential South Dakota Facts
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SD
Postal Code
The South Dakota postal code is SD. This abbreviation has been used since the USPS first established official codes in October 1963. -
Gender Ratio
Gender Ratio: 101 Men to 100 Women
Male Population: 429,313 men
Female Population: 423,862 women
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State Quarter
The South Dakota Quarter was released in November 11, 2006.
Total Mintage: 0.51 billion.
Engraver: John Mercanti -
Population and Area
Population: 853,175 people
Land Area: 75,811 square miles
Population Density: 853,175 people per square mile
Areas Codes in South Dakota (8)
- 307
- 308
- 402
- 406
- 507
- 605
- 701
- 712
South Dakota Counties (66)
| County | Top Cities |
|---|---|
| Aurora County | Plankinton, Stickney, and White Lake |
| Beadle County | Cavour, Hitchcock, Huron, Virgil, Wessington, and Wolsey |
| Bennett County | Allen, Martin, and Tuthill |
| Bon Homme County | Avon, Scotland, Springfield, Tabor, and Tyndall |
| Brookings County | Aurora, Brookings, Bruce, Elkton, Sinai, and Volga |
| Brown County | Aberdeen, Barnard, Bath, Claremont, Columbia, and Ferney |
| Brule County | Chamberlain, Kimball, and Pukwana |
| Buffalo County | Fort Thompson and Gann Valley |
| Butte County | Belle Fourche, Newell, Nisland, and Vale |
| Campbell County | Herreid, Mound City, and Pollock |
| Charles Mix County | Dante, Geddes, Lake Andes, Marty, Pickstown, and Platte |
| Clark County | Bradley, Carpenter, Clark, Garden City, Raymond, and Vienna |
| Clay County | Burbank, Vermillion, and Wakonda |
| Codington County | Florence, Henry, Kranzburg, South Shore, Wallace, and Watertown |
| Corson County | Bullhead, Keldron, Little Eagle, Mc Intosh, Mc Laughlin, and Morristown |
| Custer County | Buffalo Gap, Custer, Fairburn, Hermosa, and Pringle |
| Davison County | Ethan, Mitchell, and Mount Vernon |
| Day County | Andover, Bristol, Grenville, Pierpont, Roslyn, and Waubay |
| Deuel County | Astoria, Brandt, Clear Lake, Gary, Goodwin, and Toronto |
| Dewey County | Eagle Butte, Glencross, Isabel, Lantry, Ridgeview, and Timber Lake |
| Douglas County | Armour, Corsica, Delmont, Harrison, and New Holland |
| Edmunds County | Bowdle, Hosmer, Ipswich, and Roscoe |
| Fall River County | Edgemont, Hot Springs, Oelrichs, Oral, and Smithwick |
| Faulk County | Cresbard, Faulkton, Onaka, Rockham, and Seneca |
| Grant County | Big Stone City, Labolt, Marvin, Milbank, Revillo, and Stockholm |
| Gregory County | Bonesteel, Burke, Fairfax, Gregory, Herrick, and Saint Charles |
| Haakon County | Midland, Milesville, and Philip |
| Hamlin County | Bryant, Castlewood, Estelline, Hayti, Hazel, and Lake Norden |
| Hand County | Miller, Orient, Ree Heights, and Saint Lawrence |
| Hanson County | Alexandria, Emery, and Fulton |
| Harding County | Buffalo, Camp Crook, Ludlow, Ralph, Redig, and Reva |
| Hughes County | Blunt, Harrold, and Pierre |
| Hutchinson County | Dimock, Freeman, Kaylor, Menno, Olivet, and Parkston |
| Hyde County | Highmore, Holabird, and Stephan |
| Jackson County | Belvidere, Interior, Kadoka, Long Valley, and Wanblee |
| Jerauld County | Alpena, Lane, and Wessington Springs |
| Jones County | Draper, Murdo, and Okaton |
| Kingsbury County | Arlington, Badger, De Smet, Erwin, Iroquois, and Lake Preston |
| Lake County | Chester, Madison, Nunda, Ramona, Rutland, and Wentworth |
| Lawrence County | Deadwood, Lead, Nemo, Saint Onge, Spearfish, and Whitewood |
| Lincoln County | Canton, Fairview, Harrisburg, Hudson, Lennox, and Sioux Falls |
| Lyman County | Kennebec, Lower Brule, Oacoma, Presho, Reliance, and Vivian |
| Marshall County | Amherst, Britton, Eden, Lake City, Langford, and Veblen |
| McCook County | Bridgewater, Canistota, Montrose, Salem, and Spencer |
| McPherson County | Eureka, Leola, and Long Lake |
| Meade County | Black Hawk, Ellsworth Afb, Enning, Faith, Fort Meade, and Howes |
| Mellette County | Norris, White River, and Wood |
| Miner County | Canova, Carthage, Fedora, and Howard |
| Minnehaha County | Baltic, Brandon, Colton, Crooks, Dell Rapids, and Garretson |
| Moody County | Colman, Egan, Flandreau, and Trent |
| Pennington County | Box Elder, Caputa, Hill City, Keystone, New Underwood, and Owanka |
| Perkins County | Bison, Lemmon, Lodgepole, Meadow, and Prairie City |
| Potter County | Gettysburg, Hoven, Lebanon, and Tolstoy |
| Roberts County | Claire City, Corona, New Effington, Ortley, Peever, and Rosholt |
| Sanborn County | Artesian, Letcher, and Woonsocket |
| Shannon County | Batesland, Kyle, Manderson, Oglala, Pine Ridge, and Porcupine |
| Spink County | Ashton, Brentford, Conde, Doland, Frankfort, and Mellette |
| Stanley County | Fort Pierre and Hayes |
| Sully County | Agar and Onida |
| Todd County | Mission, Okreek, Parmelee, Rosebud, and Saint Francis |
| Tripp County | Colome, Dallas, Hamill, Ideal, Winner, and Witten |
| Turner County | Centerville, Chancellor, Davis, Hurley, Marion, and Monroe |
| Union County | Alcester, Beresford, Elk Point, Jefferson, and North Sioux City |
| Walworth County | Akaska, Glenham, Java, Mobridge, and Selby |
| Yankton County | Gayville, Irene, Lesterville, Mission Hill, Utica, and Volin |
| Ziebach County | Cherry Creek and Dupree |