Pennington County
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- Population
- 113,512
- Area
- 2,776.77 sq mi (7,191.79 km²), 7.7 sq mi water
- Median age
- 40.1
- Households
- 46,370
- Persons per household
- 2.4
- Median household income
- $74,517
- Median house value
- $302,200
Demographics: 2020–2024 ACS
Today
77°F
Sunny13% precip
Tonight
47°F
Mostly Clear1% precip
Tuesday
73°F
Sunny1% precip
Tuesday Night
52°F
Mostly Cloudy then Chance Rain Showers30% precip
Cities & Towns in Pennington County
Ash TownshipAshland HeightsBox ElderCaputaCastle Butte TownshipCedar Butte TownshipColonial Pine HillsConata TownshipCrooked Creek TownshipFairview TownshipFlat Butte TownshipGreen ValleyHill CityHuron TownshipImlay TownshipJohnson SidingKeystoneLake Creek TownshipLake Flat TownshipLake Hill TownshipNew UnderwoodOwanka TownshipPeno TownshipQuinnQuinn TownshipRainy Creek/Cheyenne TownshipRapid CityRapid ValleyScenic TownshipShyne TownshipSunnyside TownshipUnincorporated Pennington CountyWallWastaWasta Township