| Post office | Andar S.O |
| Pin code | 841231 |
| Office type | S.O |
| Taluk / city | Andar |
| District name | Siwan |
| State name | Bihar |
| Delivery status | Delivery |
| Division name | Siwan |
| Region name | Muzaffarpur |
| Circle name | Bihar |
| Related sub office | NA |
| Related head office | Siwan H.O |
| Pincode | Post office name | City | District | State |
|---|---|---|---|---|
| 841231 | Andar S.O | Andar | Siwan | Bihar |
| 841231 | Bhwrajpur B.O | Siwan | Siwan | Bihar |
| 841231 | Faridpur B.O | Siwan | Siwan | Bihar |
| 841231 | Gaighat B.O | Siwan | Siwan | Bihar |
| 841231 | Jaijore B.O | Siwan | Siwan | Bihar |
| 841231 | Kherai B.O | Siwan | Siwan | Bihar |
| 841231 | Nadiwan B.O | Siwan | Siwan | Bihar |
| 841231 | Nand Pur Amwari B.O | Siwan | Siwan | Bihar |
| 841231 | Tiyan B.O | Siwan | Siwan | Bihar |