| Office Name | Kako B.O |
| Pincodes | 847404 |
| Area | Kako |
| Office Status | Branch Post Office |
| Postal Circle | Bihar |
| Postal Division | Madhubani |
| Postal Region | Muzaffarpur |
| District | Madhubani |
| State | Bihar |
| Telephone No. | Na |
| Office Name | Kako S.O |
| Pincodes | 804418 |
| Area | Kako |
| Office Status | Sub Post Office |
| Postal Circle | Bihar |
| Postal Division | Gaya |
| Postal Region | Patna Hq |
| District | Jehanabad |
| State | Bihar |
| Telephone No. | 06114-111111 |