| Office Name | Gambhirpur B.O |
| Pincodes | 845438 |
| Area | Gambhirpur |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | West Champaran |
| Postal Region | Muzaffarpur |
| District | West Champaran |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Gambhirpur S.O |
| Pincodes | 276302 |
| Area | Gambhirpur |
| Office Status | Sub Post Office |
| Postal Circle | Uttar Pradesh |
| Postal Division | Azamgarh |
| Postal Region | Gorakhpur |
| District | Azamgarh |
| State | Uttar Pradesh |
| Telephone No. | 05462-223016 |