9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 57701 | Rapid City | 45,795 |
| 57702 | Rapid City | 35,595 |
| 57703 | Rapid City | 18,013 |
| 57745 | Hill City | 1,894 |
| 57790 | Wall | 1,147 |
| 57751 | Keystone | 893 |
| 57775 | Quinn | 191 |
| 57725 | Caputa | 130 |
| 57780 | Scenic | 70 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Pennington County, South Dakota (US Census).