| Place | Post Code |
|---|---|
| Aek Tinga, Sosa | 22765 |
| Aer Bale, Sosa | 22765 |
| Ampolu, Sosa | 22765 |
| Batu Gajah, Sosa | 22765 |
| Bonan Dolok, Sosa | 22765 |
| Gunung Baringin, Sosa | 22765 |
| Gunung Tua, Sosa | 22765 |
| Handio, Sosa | 22765 |
| Hapung, Sosa | 22765 |
| Hapung Torop, Sosa | 22765 |
| Harang Jae, Sosa | 22765 |
| Harang Julu, Sosa | 22765 |
| Horuan, Sosa | 22765 |
| Hurung Jilok, Sosa | 22765 |
| Huta Imbaru, Sosa | 22765 |
| Huta Raja Lama, Sosa | 22765 |
| Janji Raja, Sosa | 22765 |
| Lumban Huayan, Sosa | 22765 |
| Mananti Sosa Julu, Sosa | 22765 |
| Mandian, Sosa | 22765 |
| Mondang, Sosa | 22765 |
| Parapat, Sosa | 22765 |
| Parau Sorat, Sosa | 22765 |
| Pasar Ujung Batu, Sosa | 22765 |
| Pasir Jae, Sosa | 22765 |
| Pasir Julu, Sosa | 22765 |