| Zip Code | City | Population ↓ |
|---|---|---|
| 17050 | Mechanicsburg | 42,003 |
| 17055 | Mechanicsburg | 40,007 |
| 17011 | Camp Hill | 38,861 |
| 17013 | Carlisle | 36,942 |
| 17257 | Shippensburg | 28,635 |
| 17015 | Carlisle | 24,864 |
| 17025 | Enola | 17,163 |
| 17241 | Newville | 11,135 |
| 17007 | Boiling Springs | 6,259 |
| 17043 | Lemoyne | 5,858 |
| 17324 | Gardners | 3,970 |
| 17065 | Mount Holly Springs | 3,968 |
| 17240 | Newburg | 3,405 |
| 17027 | Grantham | 2,649 |
| 17093 | Summerdale | 786 |
| 17266 | Walnut Bottom | 397 |
| 17081 | Plainfield | 242 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 17 ZCTAs in Cumberland County, Pennsylvania (US Census).