Oglala Lakota County, South Dakota

Oglala Lakota County
Indian Health Service Hospital in Pine Ridge on the Pine Ridge Indian Reservation, November 2011
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates: 43°22′0.215″N 102°33′41.349″W / 43.36672639°N 102.56148583°W / 43.36672639; -102.56148583
Country United States
State South Dakota
FoundedJanuary 11, 1875
Named afterOglala Lakota people
SeatNone (de jure)
Hot Springs (de facto)
Largest communityPine Ridge
Area
  Total
2,096.352 sq mi (5,429.53 km2)
  Land2,093.601 sq mi (5,422.40 km2)
  Water2.751 sq mi (7.13 km2)  0.1%
Population
 (2020)
  Total
13,672
  Estimate 
(2024)
13,360
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Websiteoglalalakota.sdcounties.org
Hot Springs in neighboring Fall River County serves as administrative center for county

Oglala Lakota County (known as Shannon County until May 2015) is a county in southwestern South Dakota, United States. As of the 2020 census, the population was 13,672. Oglala Lakota County does not have a functioning county seat; Hot Springs in neighboring Fall River County serves as its administrative center. The county was created as a part of the Dakota Territory in 1875, although it remains unorganized. Its largest community is Pine Ridge.

The county lies entirely within the Pine Ridge Indian Reservation and contains part of Badlands National Park. It is one of five South Dakota counties entirely on an Indian reservation.

The county is named after the Oglala Lakota, a band of the Lakota people. Many of the county's inhabitants are members of this sub-tribe.

Reservation poverty affects the county, which is the poorest county in the United States (only 28 county-equivalents in the U.S. territories are poorer). Oglala Lakota County is the only dry county in South Dakota.

The newspaper for Oglala Lakota County is The Lakota Country Times.