| Bank | Indian Overseas Bank |
| State | Sikkim |
| District | East Sikkim |
| Branch | Gangtok |
| Branch CODE | 001624 (Last 6 Characters of the IFSC Code) |
| Phone | 2551662 |
| ifsc | IOBA0001624 |
| Bank | Indian Overseas Bank |
| State | Sikkim |
| District | East Sikkim |
| Branch | Central Pendam |
| Branch CODE | 003112 (Last 6 Characters of the IFSC Code) |
| Phone | 28584896 |
| ifsc | IOBA0003112 |
| Bank | Indian Overseas Bank |
| State | Sikkim |
| District | South Sikkim |
| Branch | Jorethang |
| Branch CODE | 003485 (Last 6 Characters of the IFSC Code) |
| Phone | 25665822 |
| ifsc | IOBA0003485 |