| Place | Postal Code |
|---|---|
| Girsang, Girsang Sipangan Bolon | 21174 |
| Parapat, Girsang Sipangan Bolon | 21174 |
| Sibaganding, Girsang Sipangan Bolon | 21174 |
| Sipangan Bolon, Girsang Sipangan Bolon | 21174 |
| Sipangan Bolon Mekar, Girsang Sipangan Bolon | 21174 |
| Tiga Raja, Girsang Sipangan Bolon | 21174 |