| Place | Postal Code |
|---|---|
| Rohua Arazi, Kosi) | 852124 |
| Sadhua Badh, Kosi) | 852124 |
| Satar Kataiya, Kosi) | 852124 |
| Sattar, Kosi) | 852124 |
| Shahpur, Kosi) | 852124 |
| Sihaul, Kosi) | 852124 |
| Sisai, Kosi) | 852202 |
| Tuniahi, Kosi) | 852124 |
| Ukahi, Kosi) | 852124 |
| Postal Codes in Saharsa | |
|---|---|
| Banma Itahri | |
| Kahara | |
| Mahishi | |
| Nauhatta | |
| Patarghat | |
| Salkhua | |
| Satar Kataiya | |
| Saur Bazar | |
| Simri Bakhtiarpur | |
| Sonbarsa | |