| State | District | Location | Post Code |
|---|---|---|---|
| Bihar | SIWAN | Bhagar BO | 841210 |
| Bihar | SIWAN | Gangpur Siswan SO | 841210 |
| Bihar | SIWAN | Gayaspur BO | 841210 |
| Bihar | SIWAN | Ghurghat BO | 841210 |
| Bihar | SIWAN | Kachnar BO | 841210 |
| Bihar | SIWAN | Madhopur BO | 841210 |
| Bihar | SIWAN | Noniyapatti BO | 841210 |