| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Sahorwa, Kosi) | 852216 |
| Postal/ZIP Codes in Samani, Kosi) | 852216 |
| Postal/ZIP Codes in Sapaita, Kosi) | 852216 |
| Postal/ZIP Codes in Sarauni, Kosi) | 852216 |
| Postal/ZIP Codes in Sarauni Khurd, Kosi) | 852216 |
| Postal/ZIP Codes in Semar, Kosi) | 852216 |
| Postal/ZIP Codes in Sirwar, Kosi) | 852216 |
| Postal/ZIP Codes in Sisauna, Kosi) | 852216 |
| Postal/ZIP Codes in Sonkurthua, Kosi) | 852216 |
| Postal/ZIP Codes in Supaul, Kosi) | 852216 |
| Postal/ZIP Codes in Teghra, Kosi) | 852216 |
| Postal/ZIP Codes in Telbadha, Kosi) | 852216 |
| Postal/ZIP Codes in Telhar, Kosi) | 852216 |
| Postal/ZIP Codes in Telwa, Kosi) | 852216 |
| Postal/ZIP Codes in Terhi, Kosi) | 852216 |
| Postal/ZIP Codes in Thanwar, Kosi) | 852216 |