Pennington County, South Dakota

Pennington County
Pennington County Courthouse in Rapid City
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates: 44°01′N 102°49′W / 44.01°N 102.82°W / 44.01; -102.82
Country United States
State South Dakota
Founded1875 (created)
1877 (organized)
Named forJohn L. Pennington
SeatRapid City
Largest cityRapid City
Area
 • Total2,784 sq mi (7,210 km2)
 • Land2,777 sq mi (7,190 km2)
 • Water7.8 sq mi (20 km2)  0.3%
Population
 (2020)
 • Total109,222
 • Density40/sq mi (20/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Websitewww.co.pennington.sd.us

Pennington County is a county located in the U.S. state of South Dakota. As of the 2020 census, the population was 109,222,[1] making it the second-most populous county in South Dakota. Its county seat is Rapid City.[2] It was created in 1875.[3]

References

  1. "QuickFacts: Pennington County, South Dakota". United States Census Bureau. Retrieved January 20, 2024.
  2. "Find a County". National Association of Counties. Retrieved 2011-06-07.
  3. "Dakota Territory, South Dakota, and North Dakota: Individual County Chronologies". Dakota Territory Atlas of Historical County Boundaries. The Newberry Library. 2006. Archived from the original on April 2, 2018. Retrieved March 31, 2015.