Zip Code | City | Population |
|---|---|---|
| 17020 | Duncannon | 8,642 |
| 17074 | Newport | 7,161 |
| 17090 | Shermans Dale | 5,410 |
| 17053 | Marysville | 5,130 |
| 17068 | New Bloomfield | 4,428 |
| 17062 | Millerstown | 4,060 |
| 17045 | Liverpool | 3,842 |
| 17047 | Loysville | 2,962 |
| 17040 | Landisburg | 2,466 |
| 17024 | Elliottsburg | 1,846 |
| 17037 | Ickesburg | 1,034 |
| 17006 | Blain | 1,020 |
| 17069 | New Buffalo | 294 |
| 17071 | New Germantown | 123 |