| Place | Post Code |
|---|---|
| Purain, Kosi) | 852130 |
| Ramdat Patti, Kosi) | 852130 |
| Rampur, Kosi) | 852130 |
| Sihe, Kosi) | 852130 |
| Simra, Kosi) | 852110 |
| Solhani, Kosi) | 852130 |
| Sorhi Malikan, Kosi) | 852131 |
| Sukhpur, Kosi) | 852130 |
| Supaul, Kosi) | 852131 |
| Surti Patti, Kosi) | 852131 |
| Telwa, Kosi) | 852130 |
| Postal Codes in Supaul | |
|---|---|
| Basantpur | |
| Chhatapur | |
| Kishanpur | |
| Marauna | |
| Nirmali | |
| Pipra | |
| Pratapganj | |
| Raghopur | |
| Saraigarh Bhaptiyahi | |
| Supaul | |
| Tribeniganj | |