PinCode: 847240, Umgaon kothi Post Office, Harlakhi, Madhubani, Bihar
| Post Office | Umgaon kothi |
| Post Office Status | Sub Post Office (Delivery) |
| PinCode | 847240
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| Telephone | 06246-268405 |
| Town/Taluk | Harlakhi |
| District | Madhubani |
| State | Bihar |
| Postal Division | Madhubani |
| Postal Region | Muzaffarpur |
| Postal Circle | Bihar |
List of Other Post Offices in Harlakhi, Madhubani, Bihar