| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Aurahi, Kosi) | 852105 |
| Postal/ZIP Codes in Banania, Kosi) | 852105 |
| Postal/ZIP Codes in Bathnaha, Kosi) | 852131 |
| Postal/ZIP Codes in Bela, Kosi) | 852131 |
| Postal/ZIP Codes in Bilandi, Kosi) | 847451 |
| Postal/ZIP Codes in Dhadi, Kosi) | 852215 |
| Postal/ZIP Codes in Dharhara, Kosi) | 847452 |
| Postal/ZIP Codes in Dighia, Kosi) | 852131 |
| Postal/ZIP Codes in Dudhaila, Kosi) | 847452 |
| Postal/ZIP Codes in Hariyahi, Kosi) | 847452 |
| Postal/ZIP Codes in Jarauli, Kosi) | 847451 |
| Postal/ZIP Codes in Jhahura, Kosi) | 852105 |
| Postal/ZIP Codes in Kamalpur, Kosi) | 847451 |
| Postal/ZIP Codes in Kunauli, Kosi) | 847451 |
| Postal/ZIP Codes in Kunauli Bazar, Kosi) | 847451 |
| Postal/ZIP Codes in Lagunia, Kosi) | 852105 |
| Postal/ZIP Codes in Mahua, Kosi) | 847452 |
| Postal/ZIP Codes in Majhari, Kosi) | 847451 |
| Postal/ZIP Codes in Maura, Kosi) | 852105 |
| Postal/ZIP Codes in Repauli, Kosi) | 847451 |
| Postal/ZIP Codes in Sikrahata, Kosi) | 847451 |
| Postal/ZIP Codes in Tharia, Kosi) | 847451 |