Sarlahi District
| Location / Post Office | Postal Code |
|---|---|
| Sarlahi D.P.O. | 45800 |
| Lalbandi | 45801 |
| Bayalbas | 45802 |
| Haripoorwa | 45803 |
| Hariaun | 45804 |
| Haripur | 45805 |
| Brahmapuri | 45806 |
| Kaudena | 45809 |
| Barahathawa | 45810 |
| Sundarpur | 45811 |
| Dumariya | 45813 |
| Karmaiya | 45814 |
| Harkthawa | 45815 |
| Ramnagar (Bahuarwa) | 45816 |
| Chhatauna | 45817 |
