PinCode: 847408, Kamrail Post Office, Nirmali, Supaul, Bihar
| Post Office | Kamrail |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 847408
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| Telephone | |
| Town/Taluk | Nirmali |
| District | Supaul |
| State | Bihar |
| Postal Division | Madhubani |
| Postal Region | Muzaffarpur |
| Postal Circle | Bihar |
List of Other Post Offices in Nirmali, Supaul, Bihar