Pennington County, South Dakota

Pennington County
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
Country	United States
State	South Dakota
Founded	1875 (created) 1877 (organized)
Named for	John L. Pennington
Seat	Rapid City
Largest city	Rapid City
Area
• Total	2,784 sq mi (7,210 km^2)
• Land	2,777 sq mi (7,190 km^2)
• Water	7.8 sq mi (20 km^2)  0.3%
Population  (2020)
• Total	109,222
• Density	40/sq mi (20/km^2)
Time zone	UTC−7 (Mountain)
• Summer (DST)	UTC−6 (MDT)
Congressional district	At-large
Website	www.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.