Pennington County, South Dakota

Pennington County: County in South Dakota, United States of America

About

Pennington County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 100,948 and a population density of 14 people per km². After 10 years in 2020 county had an estimated population of 115,926 inhabitants. Its county seat is Rapid City. The county was created 150 years ago in 1874.

Pennington County locator map
Location of Pennington County on South Dakota map.

Quick Facts about Pennington County

Population : 115,926 (2020)
Country : United States of America
State : South Dakota (United States)
Different from : Pennington County
Area : 7211 km2
Water as percent of area : 0.3%
Land as percent of area : 99.7%
Named for : John L. Pennington
Altitude : 2,953 feet / 900 meters
Capital : Rapid City
Establishment : January 01, 1875
Time Zone : America/Denver
Local time : 01:35:00 (22nd February 2025)
Density : 16 Pop. per km² as of 2020
Population growth : 12.92% (2010-2020)
Pennington County Courthouse 2017 image
Pennington County Courthouse 2017
Pennington County Courthouse 2017 image
Pennington County Courthouse 2017 image

Geography

Pennington County is located at 44°0'13"N 102°49'26"W (44.0037300, -102.8238300). It has 2 neighbors: Meade County and Custer County.

Pennington County map

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The largest city of Pennington County is Rapid City with a population of 77,503. Other cities include, Box Elder population 7,165, Hill City population 1,032, Wall population 885 and Ashland Heights population 754. See all Pennington County cities & populated places.

Pennington County Populated Places

Cities, towns, neighborhoods & other populated places in Pennington County.

City Name Population Title
Rapid City 77,503 The second most populous city in South Dakota.
Rapid Valley 8,260 Census-designated place in Pennington County, South Dakota
Box Elder 7,165 City in Pennington County, South Dakota, United States
Colonial Pine Hills 2,493 Township in Pennington County, South Dakota
Hill City 1,032 City in South Dakota, United States of America
Wall 885 City in Pennington County, South Dakota, United States
Ashland Heights 754 Township in Pennington County, South Dakota
New Underwood 679 Human settlement in Pennington County, South Dakota, United States of America
Keystone 352 Town in Pennington County, South Dakota
Scenic 64 Community in Pennington County, South Dakota, US
Green Valley 49 Township in Pennington County, South Dakota
Owanka 30 Township in Pennington County, South Dakota
Wasta 22 Township in Pennington County, South Dakota
Quinn 12 Town in South Dakota, United States of America

Pennington County has 2 neighbours.

  • Rapid City

Demographics

The population of Pennington County increased by 12.92% in 10 years.

Year Population % Change Method
2010 100,948 - census
2011 102,404 1.42% estimation process
2012 104,232 1.75% estimation process
2013 105,919 1.59% estimation process
2014 107,510 1.48% estimation process
2015 108,088 0.53% estimation process
2016 109,111 0.94% estimation process
2017 110,503 1.26% estimation process
2018 111,950 1.29% estimation process
2019 113,775 1.6% estimation process
2020 115,926 1.86% estimation process

Comitatul Pennington, Comte de Pennington, Comté de Pennington, Condado de Pennington, Condado han Pennington, Contea di Pennington, Hrabstwo Pennington, Okrug Penington, Peningtun, Pennington, Pennington Kun, Pennington Kūn, Pennington konderria, Pennington megye, Penningtoni maakond, Quan Pennington, Quận Pennington, mqatʿt bnynghtwn, peng ning dun xian, penintana ka'unti, peninton jun, shhrstan pnyngtn dakwtay jnwby, Округ Пенингтон, Пенингтън, Пеннингтон, Пеннінґтон, Փենինգտոն շրջան, شهرستان پنینگتن، داکوتای جنوبی, مقاطعة بنينغتون, پیننگٹن کاؤنٹی, پینینگٹن کاؤنٹی، جنوبی ڈکوٹا, পেনিংটন কাউন্টি, ペニントン郡, 彭寧頓縣

Other places with the same name (2)

South Dakota Other Counties (more counties)

County Name Population Title
Minnehaha County 196,659 County in South Dakota, United States of America
Sioux Falls 157,584 The largest city in South Dakota.
Rapid City 77,503 The second most populous city in South Dakota.
Lincoln County 63,019 County in South Dakota, United States
Brown County 38,738 County in South Dakota, United States
Brookings County 35,603 County in South Dakota, United States of America
Meade County 28,588 County in South Dakota, United States
Codington County 28,186 County in South Dakota, United States of America
Lawrence County 26,221 County in South Dakota, United States
Yankton County 22,742 County in South Dakota, United States
Watertown 22,303 City in and county seat of Codington County, South Dakota, United States
Davison County 19,812 County in South Dakota, United States of America
Beadle County 18,513 County in South Dakota, United States
Hughes County 17,336 County in Oklahoma, United States
Union County 16,192 County in South Dakota, United States
Mitchell 15,697 City in and county seat of Davison County, South Dakota, United States