| Place | Postal Code |
|---|---|
| Botot, Sorkam | 22560 |
| Dolok Pantis, Sorkam | 22560 |
| Fajar, Sorkam | 22560 |
| Gonting Mahe, Sorkam | 22560 |
| Hite Urat, Sorkam | 22560 |
| Muara Nauli, Sorkam | 22560 |
| Nai Pos Pos Barat, Sorkam | 22560 |
| Nauli, Sorkam | 22560 |
| Pagaran Julu, Sorkam | 22560 |
| Pananggahan, Sorkam | 22560 |
| Pardamean, Sorkam | 22560 |
| Pargarutan, Sorkam | 22560 |
| Pearaja, Sorkam | 22560 |
| Pelita, Sorkam | 22560 |
| Rianiate, Sorkam | 22560 |
| Sihapas, Sorkam | 22560 |
| Sorkam, Sorkam | 22560 |
| Sorkam Kiri, Sorkam | 22560 |
| Sorkam Tengah, Sorkam | 22560 |
| Tarutung Bolak, Sorkam | 22560 |
| Teluk Roban, Sorkam | 22560 |