| Place | Post Code |
|---|---|
| Aurahi, Kosi) | 852105 |
| Banania, Kosi) | 852105 |
| Bathnaha, Kosi) | 852131 |
| Bela, Kosi) | 852131 |
| Bilandi, Kosi) | 847451 |
| Dhadi, Kosi) | 852215 |
| Dharhara, Kosi) | 847452 |
| Dighia, Kosi) | 852131 |
| Dudhaila, Kosi) | 847452 |
| Hariyahi, Kosi) | 847452 |
| Jarauli, Kosi) | 847451 |
| Jhahura, Kosi) | 852105 |
| Kamalpur, Kosi) | 847451 |
| Kunauli, Kosi) | 847451 |
| Kunauli Bazar, Kosi) | 847451 |
| Lagunia, Kosi) | 852105 |
| Mahua, Kosi) | 847452 |
| Majhari, Kosi) | 847451 |
| Maura, Kosi) | 852105 |
| Repauli, Kosi) | 847451 |
| Sikrahata, Kosi) | 847451 |
| Tharia, Kosi) | 847451 |
| Postal Codes in Supaul | |
|---|---|
| Basantpur | |
| Chhatapur | |
| Kishanpur | |
| Marauna | |
| Nirmali | |
| Pipra | |
| Pratapganj | |
| Raghopur | |
| Saraigarh Bhaptiyahi | |
| Supaul | |
| Tribeniganj | |