9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 57701 | Rapid City | 45,221 |
| 57702 | Rapid City | 35,771 |
| 57703 | Rapid City | 17,543 |
| 57745 | Hill City | 1,784 |
| 57790 | Wall | 1,074 |
| 57751 | Keystone | 996 |
| 57775 | Quinn | 396 |
| 57725 | Caputa | 136 |
| 57780 | Scenic | 84 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Pennington County, South Dakota (US Census).