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
This Afternoon
77°F
Sunny
Tonight
47°F
Mostly Clear
Tuesday
75°F
Sunny
Tuesday Night
52°F
Slight Chance Showers And Thunderstorms15% 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