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Ziebach County, South Dakota facts for kids

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Ziebach County
Ziebach County Courthouse
Ziebach County Courthouse
Map of South Dakota highlighting Ziebach County
Location within the U.S. state of South Dakota
Map of the United States highlighting South Dakota
South Dakota's location within the U.S.
Country  United States
State  South Dakota
Founded 1911
Named for Frank M. Ziebach
Seat Dupree
Largest city Dupree
 • Total 1,971 sq mi (5,100 km2)
 • Land 1,961 sq mi (5,080 km2)
 • Water 9.3 sq mi (24 km2)  0.5%
 • Total 2,413
 • Estimate 
2,380 Decrease
 • Density 1.2243/sq mi (0.47269/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional district At-large

Ziebach County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 2,413. Its county seat is Dupree. It is the last county (or county equivalent) in the United States alphabetically.

The county's per-capita income makes it the fourth-poorest county in the United States.


Ziebach County was created in 1911, encompassing parts of the former counties of Schnasse, Armstrong and Sterling, which were the last three extinct counties of South Dakota to cease to exist. It was named for Frank M. Ziebach, a noted political figure in the Dakota Territory during the territorial period from 1861 to 1889. Previously the area had been used by trappers and in 1907 part was briefly a reservation for Ute Indians displaced from Utah and Wyoming. Early in the 20th Century cattle were raised in substantial numbers, but when the railroad bypassed the area this industry declined. Limited homesteading also occurred on the more fertile lands.


According to the U.S. Census Bureau, the county has a total area of 1,971 square miles (5,100 km2), of which 1,961 square miles (5,080 km2) is land and 9.3 square miles (24 km2) (0.5%) is water. Almost the entire county lies within the Cheyenne River Indian Reservation. The balance of the county, along its extreme northern county line, lies within the Standing Rock Indian Reservation. It is one of five South Dakota counties that lie entirely on Indian reservations.


Ziebach County is part of the Great Plains and is characterized by rolling grasslands and numerous buttes. The buttes form the highest points of elevation in Ziebach County and their names, latitude/longitude coordinates, and summit heights are:

  • Bessie Butte 2,474 feet (754.08 m)
  • Eagle Butte 2,484 feet (757.12 m)
  • Gray Butte 2,316 feet (705.92 m)
  • High Elk Hill 2,395 feet (730.00 m)
  • Joshua Butte 2,165 feet (659.89 m)
  • Marple Butte 2,484 feet (757.12 m)
  • Mud Butte 2,500 feet (762.00 m)
  • Mud Butte 2,365 feet (720.85 m)
  • Rattlesnake Butte 2,411 feet (734.87 m)
  • Saint Patrick Butte 2,356 feet (718.11 m)
  • Squaw Teat Butte 2,365 feet (720.85 m)
  • Thunder Butte 2,733 feet (833.02 m)

Major highways

  • US 212.svg U.S. Highway 212
  • SD 20.svg South Dakota Highway 20
  • SD 34.svg South Dakota Highway 34
  • SD 63.svg South Dakota Highway 63
  • SD 65.svg South Dakota Highway 65
  • SD 73.svg South Dakota Highway 73

Adjacent counties

National protected area

  • Grand River National Grassland (part)


Historical population
Census Pop.
1920 3,718
1930 4,039 8.6%
1940 2,875 −28.8%
1950 2,606 −9.4%
1960 2,495 −4.3%
1970 2,221 −11.0%
1980 2,308 3.9%
1990 2,220 −3.8%
2000 2,519 13.5%
2010 2,801 11.2%
2020 2,413 −13.9%
2021 (est.) 2,380 −15.0%
US Decennial Census
1790-1960 1900-1990
1990-2000 2010-2020

2010 census

As of the 2010 United States Census, there were 2,801 people, 836 households, and 638 families in the county. The population density was 1.4 inhabitants per square mile (0.54/km2). There were 987 housing units at an average density of 0.5 per square mile (0.19/km2). The racial makeup of the county was 74.9% American Indian, 21.8% white, 0.2% black or African American, 0.1% Asian, 0.1% from other races, and 3.0% from two or more races. Those of Hispanic or Latino origin made up 3.1% of the population.

Of the 836 households, 53.7% had children under the age of 18 living with them, 39.0% were married couples living together, 29.3% had a female householder with no husband present, 23.7% were non-families, and 20.9% of all households were made up of individuals. The average household size was 3.35 and the average family size was 3.82. The median age was 25.4 years.

The median income for a household in the county was $27,578 and the median income for a family was $22,857. Males had a median income of $28,954 versus $24,327 for females. The per capita income for the county was $11,069. About 41.9% of families and 46.0% of the population were below the poverty line, including 56.1% of those under age 18 and 22.9% of those age 65 or over.



Unincorporated communities

Unorganized territories

The county is divided into three areas of unorganized territory: Dupree, North Ziebach, and South Ziebach.

See also

Kids robot.svg In Spanish: Condado de Ziebach para niños

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