| Place | Post Code |
|---|---|
| Chungthang, Chungthang | 737120 |
| Chungthang Forest Block, Chungthang | 737120 |
| Lachen, Chungthang | 737120 |
| Lachen Forest Block, Chungthang | 737120 |
| Lachung, Chungthang | 737120 |
| Lachung Forest Block, Chungthang | 737120 |
| Shipgyare, Chungthang | 737120 |
| Tung, Chungthang | 737120 |
| All postal codes in North Sikkim | |
|---|---|
| Chungthang, North Sikkim | |
| Mangan, North Sikkim | |