9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 57701 | Rapid City | 45,046 |
| 57702 | Rapid City | 34,985 |
| 57703 | Rapid City | 16,951 |
| 57745 | Hill City | 1,851 |
| 57790 | Wall | 1,076 |
| 57751 | Keystone | 947 |
| 57775 | Quinn | 358 |
| 57725 | Caputa | 245 |
| 57780 | Scenic | 64 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Pennington County, South Dakota (US Census).