| Locality | Post Code |
|---|---|
| Linglestown, Dauphin | 17112 |
| Londonderry, Dauphin | 17057 |
| Lower Paxton, Dauphin | 17109, 17112 |
| Lower Swatara, Dauphin | 17057 |
| Loyalton, Dauphin | 17048 |
| Lykens, Dauphin | 17048 |
| McClellan, Dauphin | 17032 |
| Middle Paxton, Dauphin | 17018 |
| Middletown, Dauphin | 17057 |
| Millersburg, Dauphin | 17061 |
| Oberlin, Dauphin | 17113 |
| Palmdale, Dauphin | 17033 |
| Paxtang, Dauphin | 17111 |
| Paxtonia, Dauphin | 17112 |
| Penbrook, Dauphin | 17103, 17103, 17109 |
| Pillow, Dauphin | 17080 |
| Powells Valley, Dauphin | 17032 |
| Reed, Dauphin | 17032 |
| Rife, Dauphin | 17061 |
| Royalton, Dauphin | 17057 |
| Sandbeach, Dauphin | 17033 |
| Shellsville, Dauphin | 17028 |
| Shope Gardens, Dauphin | 17057 |
| Singersville, Dauphin | 17018 |
| South Hanover, Dauphin | 17036 |
| South Londonderry, Dauphin | 17033 |