Pennington County
- Population
- 113,512
- Area
- 2.78 sq mi (7.19 km²), 0.01 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
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