| Place | Post Code |
|---|---|
| Khajuri, Kosi) | 852221 |
| Lachhminia, Kosi) | 852221 |
| Madhura, Kosi) | 852221 |
| Nado, Kosi) | 852221 |
| Phursaha, Kosi) | 852221 |
| Raghunathpur, Kosi) | 852221 |
| Rauta, Kosi) | 852221 |
| Sahuria, Kosi) | 852221 |
| Saur, Kosi) | 852221 |
| Silet, Kosi) | 852221 |
| Suhath, Kosi) | 852221 |
| Tiri, Kosi) | 852121 |
| Postal Codes in Saharsa | |
|---|---|
| Banma Itahri | |
| Kahara | |
| Mahishi | |
| Nauhatta | |
| Patarghat | |
| Salkhua | |
| Satar Kataiya | |
| Saur Bazar | |
| Simri Bakhtiarpur | |
| Sonbarsa | |