| Place | Post Code |
|---|---|
| Dunta, Welak | 86762 |
| Galang, Welak | 86762 |
| Golo Ndari, Welak | 86762 |
| Golo Ronggot, Welak | 86762 |
| Gurung, Welak | 86762 |
| Lale, Welak | 86762 |
| Orong, Welak | 86762 |
| Pengka, Welak | 86762 |
| Pong Welak, Welak | 86762 |
| Racang Welak, Welak | 86762 |
| Rehak, Welak | 86762 |
| Robo, Welak | 86762 |
| Semang, Welak | 86762 |
| Sewar, Welak | 86762 |
| Watu Umpu, Welak | 86762 |
| Wewa, Welak | 86762 |