| Zip Code | City | Population ↓ |
|---|---|---|
| 17815 | Bloomsburg | 29,125 |
| 18603 | Berwick | 19,147 |
| 17820 | Catawissa | 5,317 |
| 17814 | Benton | 4,804 |
| 17824 | Elysburg | 3,718 |
| 17846 | Millville | 3,683 |
| 17859 | Orangeville | 2,809 |
| 17878 | Stillwater | 1,534 |
| 18631 | Mifflinville | 1,134 |
| 17888 | Wilburton | 514 |
| 17945 | Locustdale | 275 |
| 17920 | Aristes | 242 |
| 17858 | Numidia | 65 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 13 ZCTAs in Columbia County, Pennsylvania (US Census).