| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Sumbuk, Namchi | 737128 |
| Postal/ZIP Codes in Suntaley, Namchi | 737128, 737126 |
| Postal/ZIP Codes in Tanak, Namchi | 737126 |
| Postal/ZIP Codes in Tangji, Namchi | 737132 |
| Postal/ZIP Codes in Tarku, Namchi | 737134 |
| Postal/ZIP Codes in Tarku Forest Block, Namchi | 737134 |
| Postal/ZIP Codes in Temi Forest Block, Namchi | 737134 |
| Postal/ZIP Codes in Temi Tea Estate, Namchi | 737134 |
| Postal/ZIP Codes in Thangsing, Namchi | 737134 |
| Postal/ZIP Codes in Tingrithang, Namchi | 737126 |
| Postal/ZIP Codes in Tinik, Namchi | 737126 |
| Postal/ZIP Codes in Tinzer, Namchi | 737126 |
| Postal/ZIP Codes in Tokal, Namchi | 737113 |
| Postal/ZIP Codes in Tokdey, Namchi | 737134 |
| Postal/ZIP Codes in Tshalumthang, Namchi | 737106 |
| Postal/ZIP Codes in Turuk, Namchi | 737128 |
| Postal/ZIP Codes in Turung, Namchi | 737132 |
| Postal/ZIP Codes in Wak, Namchi | 737126 |
| Postal Codes in South Sikkim | |
|---|---|
| Postal/ZIP Codes in Namchi, South Sikkim | |
| Postal/ZIP Codes in Ravong, South Sikkim | |