| Office Name | Darwan B.O |
| Pincodes | 824203 |
| Area | Darwan |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Aurangabad Bihar |
| Postal Region | Patna Hq |
| District | Aurangabad Bh |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Darwan B.O |
| Pincodes | 821110 |
| Area | Darwan |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Rohtas |
| Postal Region | Patna Hq |
| District | Kaimur Bhabua |
| State | Bihar |
| Telephone No. | Na |