| Office Name | Sonai S.O Kolkata |
| Pincodes | 700043 |
| Area | Sonai Kolkata |
| Office Status | Sub Post Office |
| Postal Circle | West Bengal |
| Postal Division | Calcutta South |
| Postal Region | Calcutta |
| District | Kolkata |
| State | West Bengal |
| Telephone No. | 033-28690628 |
| Office Name | South Eastern Railway S.O |
| Pincodes | 700043 |
| Area | South Eastern Railway |
| Office Status | Sub Post Office |
| Postal Circle | West Bengal |
| Postal Division | Calcutta South |
| Postal Region | Calcutta |
| District | Kolkata |
| State | West Bengal |
| Telephone No. | 033-24393161 |