West Sikkim Consist of 4 Subdivisions and 10 Blocks as follows
| Sl No | Subdivision Name | Address | Contact Person | Contact No |
|---|---|---|---|---|
| 1 | Gyalshing | DAC Rabdentse | SDM Gyalshing | 03595-250888 |
| 2 | Soreng | SDAC Soreng | SDM Soreng | 03595-253007 |
| 3 | Dentam | SDAC Dentam | SDM Dentam | 03595-210494 |
| 4 | Yuksom | SDAC Yuksom | SDM Yuksom | 9647884804 |
| Sl No | Block Name | Address | Contact Person | Contact No |
|---|---|---|---|---|
| 1 | Gyalshing | BAC Gyalshing | BDO Gyalshing | 7797883008 |
| 2 | Yuksam | BAC Yuksam | BDO Yuksam | 9647853812 |
| 3 | Chongrang | BAC Chongrang | BDO Chongrang | 9734101006 |
| 4 | Dentam | BAC Dentam | BDO Dentam | 9609868239 |
| 5 | Hee Martam | BAC Hee Martam | BDO Hee Martam | 9735011975 |
| 6 | Kaluk | BAC Kaluk | BDO Kaluk | 8768355508 |
| 7 | Soreng | BAC Soreng | BDO Soreng | 8972705937 |
| 8 | Chumbung | BAC Chumbung | BDO Chumbung | 8145445682 |
| 9 | Daramdin | BAC Daramdin | BDO Daramdin | 9069852107 |
| 10 | Mangalbarey | BAC | BDO Mangalbarey | 9732614726 |