| Place | Post Code |
|---|---|
| Sirkhiria, Tirhut) | 843117 |
| Sonpurwa, Tirhut) | 843328 |
| Subhaigarh, Tirhut) | 843117 |
| Suhai, Tirhut) | 843323 |
| Sultanpur Urf Madhopur, Tirhut) | 843328 |
| Tahirpur, Tirhut) | 843117 |
| Tekaur, Tirhut) | 843328, 843323 |
| Thumma, Tirhut) | 843328 |
| Tikauli, Tirhut) | 843323 |
| Umarpur, Tirhut) | 843328 |
| Waina, Tirhut) | 843311 |