| Place | Post Code |
|---|---|
| Sinabongan, Dolok | 22756 |
| Sipiongot, Dolok | 22756 |
| Siraga Huta Padang, Dolok | 22756 |
| Siranap, Dolok | 22756 |
| Situmbaga, Dolok | 22756 |
| Sungai Datar, Dolok | 22756 |
| Sungai Pining, Dolok | 22756 |
| Tanjung Baru B, Dolok | 22756 |
| Tanjung Longat, Dolok | 22756 |
| Tarutung Bolak, Dolok | 22756 |