| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Afzalpur, Kosi) | 852127 |
| Postal/ZIP Codes in Badshah Nagar, Kosi) | 852126 |
| Postal/ZIP Codes in Banma Itahri, Kosi) | 852126 |
| Postal/ZIP Codes in Deokal, Kosi) | 852126 |
| Postal/ZIP Codes in Ghordaur, Kosi) | 852127 |
| Postal/ZIP Codes in Hath Mandal, Kosi) | 852126 |
| Postal/ZIP Codes in Itahari, Kosi) | 852126 |
| Postal/ZIP Codes in Jamal Nagar, Kosi) | 852126 |
| Postal/ZIP Codes in Kasimpur, Kosi) | 852127 |
| Postal/ZIP Codes in Khorasan, Kosi) | 852106 |
| Postal/ZIP Codes in Kusmhi, Kosi) | 852127 |
| Postal/ZIP Codes in Lalpur, Kosi) | 852127 |
| Postal/ZIP Codes in Maharas, Kosi) | 852127 |
| Postal/ZIP Codes in Mamarkha, Kosi) | 852126 |
| Postal/ZIP Codes in Murli, Kosi) | 852127 |
| Postal/ZIP Codes in Sahuria, Kosi) | 852126 |
| Postal/ZIP Codes in Sarbella, Kosi) | 852127 |
| Postal/ZIP Codes in Shamsuddinpur, Kosi) | 852127 |
| Postal/ZIP Codes in Sugma, Kosi) | 852129 |