| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 601 | Thumha | Thumha | 📍 852134 | Supaul | Branch Post Office |
| 602 | Thuthi | Balua Bazar SO | 📍 854339 | Chhatapur | Post Office - PO |
| 603 | Tribeniganj | Baljora BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 604 | Tribeniganj | Jaraila BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 605 | Tribeniganj | Karibiahi BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 606 | Tribeniganj | Kumiahi BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 607 | Tribeniganj | Malhanwa BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 608 | Tribeniganj | Triveniganj SO | 📍 852139 | Tribeniganj | Post Office - PO |
| 609 | Tribeniganj | Chouraha BO | 📍 852139 | Tribeniganj | Branch Post Office |
| 610 | Tulapatti | Tullapatti BO | 📍 852108 | Pipra | Branch Post Office |
| 611 | Tulapatti | Tharbitta SO | 📍 852138 | Kishanpur | Post Office - PO |
| 612 | Tulsipatti | Balua Bazar SO | 📍 854339 | Basantpur | Post Office - PO |
| 613 | Udhampur | Madhubani BO | 📍 852125 | Chhatapur | Branch Post Office |
| 614 | Uganipatti | Karjain Bazar SO | 📍 852215 | Saraigarh Bhaptiyahi | Post Office - PO |
| 615 | Undraha | Karjain Bazar SO | 📍 852215 | Raghopur | Post Office - PO |