South Dakota

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South Dakota

South Dakota (dəkōˈtə), state in the N central United States. It is bordered by North Dakota (N), Minnesota and Iowa (E), Nebraska (S), and Wyoming and Montana (W).

Facts and Figures

Area, 77,047 sq mi (199,552 sq km). Pop. (2020) 886,667, a 8.7% increase since the 2010 census. As of the 2020 census, the state's population was: White alone, 84.6%; Black alone, 2.3%; Hispanic or Latino, 4.2%; American Indian and Alaska native alone, 9%; Asian alone, 1.5%; Two or More Races, 2.5%. Capital, Pierre. Largest city, Sioux Falls. Statehood, Nov. 2, 1889 (40th state), simultaneously with North Dakota. Highest pt., Harney Peak, 7,242 ft (2,209 m); lowest pt., Big Stone Lake, 962 ft (293 m). Nicknames, Rushmore State; Coyote State. Motto, Under God the People Rule. State bird, ring-necked pheasant. State flower, pasqueflower. State tree, Black Hills spruce. Abbr., S.Dak.; SD


South Dakota shows some of the earliest geologic history of the continent in the rock formations of the ancient Black Hills and in the Badlands. In the area between the White River and the south fork of the Cheyenne, the Badlands display in their deeply eroded clay gullies not only colorful, fantastic shapes, but also a wealth of easily accessible marine and land fossils (the Badlands National Monument preserves the area for its startling scenery and geologic interest). From east to west the state rises some 6,000 ft (1,829 m) to Harney Peak (7,242 ft/2,207 m) in the Black Hills, highest point in the United States E of the Rockies.

Through the center of the state the Missouri River cuts a wide valley southward; other principal rivers include the James and the Big Sioux to the east, and the Cheyenne, the Belle Fourche, the Moreau, the Grand River, and the White River to the west. The whole of South Dakota has a continental climate; summer brings a succession of hot, cloudless days, and in winter blizzards sweep across bare hillsides, filling the coulees with deep snow. The average annual rainfall is low, and declines from east to west across the state, and in years of drought summer winds blow away acres of top soil in “black blizzards.”

Among the state's attractions are Badlands and Wind Cave national parks, Jewel Cave National Monument, and the famous gigantic carvings of the Mount Rushmore National Memorial (see National Parks and Monuments, table). Pierre is the capital; the largest cities are Sioux Falls and Rapid City.


Almost one third of the region west of the Missouri River, a semiarid, treeless plain, belongs to Native Americans, most of whom live on reservations such as Cheyenne River, Pine Ridge, Rosebud, and Standing Rock. Much of the remaining area is occupied by large ranches; there cattle and sheep ranching provide the major source of income, with soybean and wheat farming second in the production of revenue. In the more productive region east of the Missouri, livestock and livestock products are the primary sources of income. Corn, soybeans, oats, and wheat are South Dakota's chief cash crops; sunflowers, sorghum, flaxseed, and barley are also grown. Although there is a certain amount of diversified industry, including electronics manufacturing, in Sioux Falls and Rapid City, meatpacking and food processing are by far the major industries of the state.

Gold is South Dakota's most important mineral, and the town of Lead in the Black Hills is the country's leading gold-mining center. Tourism, focusing especially on Mt. Rushmore and other Black Hills sites, and gambling are also major sources of income.

Government and Higher Education

South Dakota is governed under its 1889 constitution. The legislature consists of 35 senators and 70 representatives, all elected for two-year terms. The governor is elected for four years. The state sends one U.S. representative and two senators to the U.S. Congress and has three electoral votes. The state is solidly Republican.

Institutions of higher learning in South Dakota include Augustana Univ., at Sioux Falls; Northern State Univ., at Aberdeen; the South Dakota School of Mines and Technology, at Rapid City; South Dakota State Univ., at Brookings; and the Univ. of South Dakota, at Vermillion.


Early Inhabitants, European Exploration, and Fur Trading

At the time of European exploration, South Dakota was inhabited by Native Americans of the agricultural Arikara and the nomadic Sioux (Dakota). By the 1830s the Sioux had driven the Arikara from the area. Part of the region that is now South Dakota was explored in the mid-18th cent. by sons of the sieur de la Vérendrye. The United States acquired the region as part of the Louisiana Purchase, and it was partially explored by Lewis and Clark in their Missouri River expedition of 1804–6. Later explorers became well acquainted with the warlike Sioux, who continued to dominate the region from the period of the fur trade until to the middle of the 19th cent. Individual traders from the time of Pierre Dorion in the late 18th cent. made the region their home, and the posts founded by Pierre Chouteau and the American Fur Company were the first bases for settlement. (Fort Pierre was established in 1817.)


It was not until land speculators and farmers moved westward from Minnesota and Iowa in the 1850s that any significant settlements developed in South Dakota. Two land companies were established at Sioux Falls in 1856, and in 1859 Yankton, Bon Homme, and Vermillion were laid out. A treaty with the Sioux opened the land between the Big Sioux and the Missouri, and in 1861 Dakota Territory was established, embracing not only present-day North and South Dakota but also E Wyoming and E Montana. Yankton was the capital. Settlers were discouraged by droughts, conflicts with the Native Americans, and plagues of locusts; however, by the time the railroad pushed to Yankton in 1872, the region had received the first of the European immigrants who later came in great numbers, contributing significant German, Scandinavian, and Russian elements to the Dakotas.

Gold Fever and the End of Sioux Resistance

Rumors of gold in the Black Hills, confirmed by a military expedition led by George A. Custer in 1874, excited national interest, and wealth seekers began to pour into the area. However, much of the Black Hills region had been granted (1868) to the Sioux by treaty, and when they refused to sell either mining rights or the reservation itself, warfare again broke out. The defeat (1876) of Custer and his men by Sitting Bull, Crazy Horse, and Gall in the battle of the Little Bighorn (in what is now Montana) did not prevent the whites from gradually acquiring more and more Native American land, including the gold-lined Black Hills.

The near extinction of the buffalo herds, Sitting Bull's death (1890) at the hands of army-trained Native American police, and the subsequent massacre of Big Foot's band at Wounded Knee Creek were among the factors leading to the permanent end of Native American resistance in South Dakota. Tribal organization was weakened by the Dawes Act of 1887. Although the Indian Reorganization Act of 1934 attempted to restore tribal ownership of repurchased lands, younger generations have moved to the cities in increasing numbers. During the 1870s the gold fever mounted; Deadwood had its day of gaudy glory, Wild Bill Hickok and Calamity Jane created frontier legends, and the town of Lead began its long, productive history.

The Dakota Land Boom, Statehood, and Agrarian Reform

Although gold did not make the fortune of South Dakota, it laid the foundation by stimulating cattle ranching—herds of cattle were first brought to the grasslands of W South Dakota partly to supply food for the miners. Settlement in the east also increased and the period from 1878 to 1886, following the resumption of railroad building after the financial depression earlier in the decade, was the time of the great Dakota land boom, when the region's population increased threefold.

Agitation for statehood developed; in 1888 the Republican party adopted the statehood movement as a campaign issue, and in 1889 Congress passed an enabling act. The Dakotas were separated; South Dakota became a state with Pierre as capital. Disasters, however, rocked its security. The unusually severe winter of 1886–87 had destroyed huge herds of cattle in the west, ruining the great bonanza ranches and promoting among the ranchers the trend—dominant ever since—of having smaller herds with provisions for winter shelter and feeding. Cattle grazed on public land and were rounded up only for branding and shipment to market.

Recurrent droughts added to the difficulties of the farmers, who sought economic relief in the cooperative ventures of the Farmers' Alliance and political influence in the Populist party, which won a resounding victory in 1896. Initiative and referendum were adopted (1898; South Dakota was the first state to adopt them) and other progressive measures of the day were enacted. However, prosperity resumed, and with it South Dakota quickly returned to political conservatism and the Republican party.

Railroads, Droughts, and the Great Depression

The extension of railroads (particularly the Milwaukee, which was the only transcontinental line passing through South Dakota) encouraged further expansion of agriculture, but new droughts (especially that of 1910–11) brought a brief period of emigration. Many new farmsteads were abandoned, and a turn toward political radicalism developed. The Progressive party, led by Peter Norbeck (governor 1917–21) and operating as a branch of the Republican party, revived the attempts of Populist reform programs to regulate railroad rates and raise assessments of corporate property. The Progressives also entered into experiments in state ownership of business.

Prosperity-depression cycles again affected the state after the boom of World War I. The combination of droughts and the Great Depression brought widespread calamities in the late 1920s and early 30s, and the state's population declined by 50,000 between 1930 and 1940. Vigorous relief measures were instituted under the New Deal, and higher farm prices during World War II and the ensuing years brought a new era of hopefulness.

Postwar Changes

The 1950s began a period of Democratic strength in state politics. George McGovern was elected to the House of Representatives in 1956 and to the Senate in 1962, 1968, and 1974. In 1972 McGovern ran unsuccessfully for president. In 1973 the American Indian Movement led a 71-day occupation of Wounded Knee that included gun battles with federal marshals; the occupation was in part a protest over the issue of broken treaties.

In the postwar period the adoption of improved farming techniques resulted in a steady increase in agricultural and livestock production. This was accompanied, however, by the consolidation of small farms into large units and the displacement of many small farmers. Irrigation projects, extension of hydroelectric power, and protective measures against wind and water erosion have been implemented, avoiding the threat of new disasters. In 1981 a major New York bank relocated its credit-card operations to Sioux Falls, marking the beginning of the state's shift toward service, finance, and trade industries that, in turn, has resulted in significant economic growth. Some casino gambling was legalized in 1989 and tourism continues to be one of the state's top sources of income. Family farming has declined leading to large drops in population in rural areas of the state, while urban areas have benefitted from new service and technology industries. The Sanford Underground Research Facility opened in 2007 in a former gold mine; it is the deepest scientific research site in the country.

Republicans have held the governorship since 1979. Current governor, Kristi Noem (2019-), is the first woman to hold the post. She ran as a conservative, opposing abortion, COVID-19 vaccinations, and legalization of medical marijuana use.


See H. S. Schell, South Dakota: Its Beginnings and Growth (1960) and History of South Dakota (3d ed. 1975); J. R. Milton, South Dakota (1977); F. M. Berg, South Dakota: Land of Shining Gold (1982).

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.

South Dakota State Information

Phone: (605) 773-3011

Area (sq mi):: 77116.49 (land 75884.64; water 1231.85) Population per square mile: 10.20
Population 2005: 775,933 State rank: 0 Population change: 2000-20005 2.80%; 1990-2000 8.50% Population 2000: 754,844 (White 88.00%; Black or African American 0.60%; Hispanic or Latino 1.40%; Asian 0.60%; Other 10.10%). Foreign born: 1.80%. Median age: 35.60
Income 2000: per capita $17,562; median household $35,282; Population below poverty level: 13.20% Personal per capita income (2000-2003): $25,720-$28,856
Unemployment (2004): 3.80% Unemployment change (from 2000): 1.10% Median travel time to work: 16.60 minutes Working outside county of residence: 16.30%

List of South Dakota counties:

  • Aurora County
  • Beadle County
  • Bennett County
  • Bon Homme County
  • Brookings County
  • Brown County
  • Brule County
  • Buffalo County
  • Butte County
  • Campbell County
  • Charles Mix County
  • Clark County
  • Clay County
  • Codington County
  • Corson County
  • Custer County
  • Davison County
  • Day County
  • Deuel County
  • Dewey County
  • Douglas County
  • Edmunds County
  • Fall River County
  • Faulk County
  • Grant County
  • Gregory County
  • Haakon County
  • Hamlin County
  • Hand County
  • Hanson County
  • Harding County
  • Hughes County
  • Hutchinson County
  • Hyde County
  • Jackson County
  • Jerauld County
  • Jones County
  • Kingsbury County
  • Lake County
  • Lawrence County
  • Lincoln County
  • Lyman County
  • Marshall County
  • McCook County
  • McPherson County
  • Meade County
  • Mellette County
  • Miner County
  • Minnehaha County
  • Moody County
  • Pennington County
  • Perkins County
  • Potter County
  • Roberts County
  • Sanborn County
  • Shannon County
  • Spink County
  • Stanley County
  • Sully County
  • Todd County
  • Tripp County
  • Turner County
  • Union County
  • Walworth County
  • Yankton County
  • Ziebach County
  • Counties USA: A Directory of United States Counties, 3rd Edition. © 2006 by Omnigraphics, Inc.

    South Dakota Parks

    Parks Directory of the United States, 5th Edition. © 2007 by Omnigraphics, Inc.
    The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

    South Dakota


    a state in the central USA. Area, 199,500 sq km. Population, 680,000 (1976), of which 45 percent is urban. The capital is Pierre.

    The eastern part of South Dakota lies in the Central Plains, and the western part, in the Great Plains. Elevations range from 300 m in the east to 1,000 m or more in the west, with the maximum being 2,207 m. The terrain is deeply dissected by river valleys and ravines. South Dakota has a temperate, continental climate. The average January temperature ranges from −10°C to –15°C, and the average July temperature, from 20°C to 23°C. Annual precipitation totals 350–500 mm; droughts are frequent. The Missouri River and several of its tributaries flow through the state, and there are numerous reservoirs.

    Agriculture is the basis of South Dakota’s economy. In 1975 the economically active population totaled 270,000, with 55,000 employed in agriculture, 22,000 in industry, and 12,000 in transportation. Livestock raising accounts for more than 75 percent of agricultural commodity production. There are 4.5 million head of cattle, 2.1 million swine, and 900,000 sheep. The chief crops are wheat (in the west), Indian corn (in the southeast), oats, barley, and forage grasses.

    South Dakota leads the USA in gold mining, which is centered in the Black Hills region. Uranium is also mined. Other industries include meat-packing, flour milling, cheesemaking, buttermaking and the manufacture of agricultural equipment. In 1974 the state’s electric power plants had a total capacity of 1.7 gigawatts, including 1.4 gigawatts from hydroelectric power. South Dakota has 6,100 km of railroad lines.

    The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

    South Dakota

    Fortieth state; admitted on November 2, 1889

    State capital: Pierre Nickname: Mount Rushmore State State motto: Under God the People Rule State animal: Coyote (Canis latrans) State bird: Ring-necked pheasant (Phasianus colchicus) State dessert: Kuchen State fish: Walleye (Stizostedion vitreum) State flower: American pasque or May Day flower (Pul­

    satilla hisutissima) State fossil: Triceratops State gem: Fairburn agate State insect: Honeybee (Apis mellifera) State jewelry: Black Hills gold State mineral: Rose quartz State soil: Houdek soil State song: “Hail, South Dakota” State sport: Rodeo State tree: Black Hills spruce (Picea glauca densata)

    More about state symbols at:


    AmerBkDays-2000, p. 750 AnnivHol-2000, p. 184


    State web site:

    Office of the Governor
    500 E Capitol
    Pierre, 57501-5070

    Secretary of State
    500 E Capitol, Ste 204
    Pierre, 57501-5070
    fax: 605-773-6580

    State Library
    Mercedes MacKay Bldg
    800 Governors Dr
    Pierre, 57501-2294
    fax: 773-6962

    Legal Holidays:

    Native Americans' DayOct 10, 2011; Oct 8, 2012; Oct 14, 2013; Oct 13, 2014; Oct 12, 2015; Oct 10, 2016; Oct 9, 2017; Oct 8, 2018; Oct 14, 2019; Oct 12, 2020; Oct 11, 2021; Oct 10, 2022; Oct 9, 2023
    Holidays, Festivals, and Celebrations of the World Dictionary, Fourth Edition. © 2010 by Omnigraphics, Inc.

    South Dakota

    a state of the western US: lies mostly in the Great Plains; the chief US producer of gold and beryl. Capital: Pierre. Pop.: 764 309 (2003 est.). Area: 196 723 sq. km (75 955 sq. miles)
    Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
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