| Place | Post Code |
|---|---|
| Afzalpur, Kosi) | 852127 |
| Badshah Nagar, Kosi) | 852126 |
| Banma Itahri, Kosi) | 852126 |
| Deokal, Kosi) | 852126 |
| Ghordaur, Kosi) | 852127 |
| Hath Mandal, Kosi) | 852126 |
| Itahari, Kosi) | 852126 |
| Jamal Nagar, Kosi) | 852126 |
| Kasimpur, Kosi) | 852127 |
| Khorasan, Kosi) | 852106 |
| Kusmhi, Kosi) | 852127 |
| Lalpur, Kosi) | 852127 |
| Maharas, Kosi) | 852127 |
| Mamarkha, Kosi) | 852126 |
| Murli, Kosi) | 852127 |
| Sahuria, Kosi) | 852126 |
| Sarbella, Kosi) | 852127 |
| Shamsuddinpur, Kosi) | 852127 |
| Sugma, Kosi) | 852129 |
| Postal Codes in Saharsa | |
|---|---|
| Banma Itahri | |
| Kahara | |
| Mahishi | |
| Nauhatta | |
| Patarghat | |
| Salkhua | |
| Satar Kataiya | |
| Saur Bazar | |
| Simri Bakhtiarpur | |
| Sonbarsa | |