Post offices and branch post offices present in West Sikkim district of Sikkim state. There are 43 Post Offices located in the district. List of Pin code of all the places in West Sikkim is listed below.
| Post Office | Taluk | District | PIN Code |
|---|---|---|---|
| Arithang B.O | Gayzing | West Sikkim | 737111 |
| Arubotay B.O | Jorethang | West Sikkim | 737121 |
| Bhaluthang B.O | Gayzing | West Sikkim | 737111 |
| Budang B.O | Jorethang | West Sikkim | 737121 |
| Buriakhop B.O | Jorethang | West Sikkim | 737121 |
| Chakung B.O | Jorethang | West Sikkim | 737121 |
| Chingthang B.O | Gayzing | West Sikkim | 737111 |
| Chumbong B.O | Jorethang | West Sikkim | 737121 |
| Darap B.O | Pelling | West Sikkim | 737113 |
| Dentam B.O | Pelling | West Sikkim | 737113 |
| Gayzing S.O | Gayzing | West Sikkim | 737111 |
| Gerathang B.O | Gayzing | West Sikkim | 737111 |
| Hee Gaon B.O | Pelling | West Sikkim | 737113 |
| Kaluk B.O | Pelling | West Sikkim | 737113 |
| Karjee B.O | Gayzing | West Sikkim | 737111 |
| Karmatar B.O | Pelling | West Sikkim | 737113 |
| Khechuperi B.O | Pelling | West Sikkim | 737113 |
| Legship B.O | Gayzing | West Sikkim | 737111 |
| Lingchom B.O | Gayzing | West Sikkim | 737111 |
| Majitar B.O | Jorethang | West Sikkim | 737121 |
| Malbasey B.O | Jorethang | West Sikkim | 737121 |
| Mechi Aching B.O | Pelling | West Sikkim | 737113 |
| Namphu B.O | Pelling | West Sikkim | 737113 |
| Naya Bazar S.O (West Sikkim) | Jorethang | West Sikkim | 737121 |
| Pelling S.O | Pelling | West Sikkim | 737113 |
| Radhu Khandu B.O | Pelling | West Sikkim | 737113 |
| Rangship B.O | Gayzing | West Sikkim | 737111 |
| Rimbi B.O | Pelling | West Sikkim | 737113 |
| Rinchenpong B.O | Gayzing | West Sikkim | 737111 |
| Sinek B.O | Gayzing | West Sikkim | 737111 |
| Sri Badam B.O | Jorethang | West Sikkim | 737121 |
| Suldung B.O | Jorethang | West Sikkim | 737121 |
| Takuthang B.O | Jorethang | West Sikkim | 737121 |
| Tashiding B.O | Gayzing | West Sikkim | 737111 |
| Tharpu B.O | Jorethang | West Sikkim | 737121 |
| Thingling B.O | Pelling | West Sikkim | 737113 |
| Tikpur B.O | Jorethang | West Sikkim | 737121 |
| Timburbong B.O | Jorethang | West Sikkim | 737121 |
| Uttarey B.O | Pelling | West Sikkim | 737113 |
| Yangtey B.O | Gayzing | West Sikkim | 737111 |
| Yangthang B.O | Gayzing | West Sikkim | 737111 |
| Yuksom B.O | Pelling | West Sikkim | 737113 |
| Zoom B.O | Jorethang | West Sikkim | 737121 |