PinCode: 796081, Builum Post Office, Kolasib, Kolasib, Mizoram
| Post Office | Builum |
| Post Office Status | Branch Post Office (Delivery) |
| PinCode | 796081
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| Telephone | |
| Town/Taluk | Kolasib |
| District | Kolasib |
| State | Mizoram |
| Postal Division | Mizoram |
| Postal Region | North Eastern |
| Postal Circle | North Eastern |
List of Other Post Offices in Kolasib, Kolasib, Mizoram