| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Ramnagar, Tirhut) | 843302 |
| Postal/ZIP Codes in Rampur Gangauli, Tirhut) | 843327 |
| Postal/ZIP Codes in Rewasi Maksudpur, Tirhut) | 843327 |
| Postal/ZIP Codes in Riga, Tirhut) | 843327 |
| Postal/ZIP Codes in Sankhi, Tirhut) | 843302 |
| Postal/ZIP Codes in Shahbazpur, Tirhut) | 843327 |
| Postal/ZIP Codes in Simri, Tirhut) | 843327 |
| Postal/ZIP Codes in Sirahi, Tirhut) | 843327 |
| Postal/ZIP Codes in Sirauli, Tirhut) | 843302 |
| Postal/ZIP Codes in Sonar, Tirhut) | 843327 |