In East District district, Sikkim, PIN code 737135 is anchored by Rumtek BO, a Branch Post Office. Mail addressed to this code is sorted through the Eastern Postal Region, across 10 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Rumtek BO | BO | Branch Post Office |
| Samlickmarchak BO | BO | Branch Post Office |
| Upper Martam BO | BO | Branch Post Office |
| Ranipool SO | SO | Sub Post Office |
| Ahoo Busty BO | BO | Branch Post Office |
| Middle Camp BO | BO | Branch Post Office |
| Rauteyrumtek BO | BO | Branch Post Office |
| Assam Lingzey BO | BO | Branch Post Office |
| Nandok BO | BO | Branch Post Office |
| Raymindu BO | BO | Branch Post Office |
