| Place | Postal Code |
|---|---|
| Marbun, Bakti Raja | 22457 |
| Marbun Tonga Marbun Dolok, Bakti Raja | 22457 |
| Marbun Toruan, Bakti Raja | 22457 |
| Simamora, Bakti Raja | 22457 |
| Simangulampe, Bakti Raja | 22457 |
| Sinambela, Bakti Raja | 22457 |
| Siunong-Unong Julu, Bakti Raja | 22457 |
| Tipang, Bakti Raja | 22457 |