| Locality | Post Code |
|---|---|
| Bachmanville, Dauphin | 17033 |
| Berrysburg, Dauphin | 17005 |
| Bressler, Dauphin | 17113 |
| Carsonville, Dauphin | 17032 |
| Dalmatia, Dauphin | 17017 |
| Dauphin, Dauphin | 17018 |
| Derry Church, Dauphin | 17033 |
| Elizabethtown, Dauphin | 17022 |
| Elizabethville, Dauphin | 17023 |
| Ellendale, Dauphin | 17018 |
| Enders, Dauphin | 17032 |
| Enterline, Dauphin | 17032 |
| Erdman, Dauphin | 17048 |
| Fisherville, Dauphin | 17032 |
| Grantville, Dauphin | 17028 |
| Gratz, Dauphin | 17030 |
| Green Fields, Dauphin | 17098 |
| Halifax, Dauphin | 17032 |
| Harrisburg, Dauphin | 17101, 17102, 17103, 17104, 17105, … |
| Hershey, Dauphin | 17033 |
| High Spire, Dauphin | 17034 |
| Hoernerstown, Dauphin | 17036 |
| Hummelstown, Dauphin | 17036 |
| Inglenook, Dauphin | 17032 |
| Killinger, Dauphin | 17061 |
| Lenkerville, Dauphin | 17061 |