| Post Office: | Chainpur SO Siwan |
|---|---|
| Post Office Type: | PO |
| District: | SIWAN |
| State: | BIHAR |
| Pin Code: | 841203 |
| Address: | Postmaster, Chainpur SO Siwan (PO), SIWAN, BIHAR, India |
| Status: | Delivery |
| Division: | Siwan Division |
| Region: | Muzaffarpur Region |
| Circle: | Bihar Circle |
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