| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 2651 | Ukhai purbaripatti | Ukhai BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 2652 | Ukhaipachhiaripatti | Gaushalaroad Siwan SO | 📍 841227 | Pachrukhi | Post Office - PO |
| 2653 | Ukrenri | Keotalia BO | 📍 841234 | Darauli | Branch Post Office |
| 2654 | Ungo | Nand Pur Amwari BO | 📍 841231 | Raghunathpur | Branch Post Office |
| 2655 | Upadhya chhaper | Langarpura BO | 📍 841239 | Mairwa | Branch Post Office |
| 2656 | Uriyan Tola Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 2657 | Ushari Bazar Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 2658 | Ushari Harinandan | Chorma BO | 📍 841406 | Bhagwanpur Hat | Branch Post Office |
| 2659 | Ushari Kanhu Tola Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 2660 | Ushari Paschmi Tola Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 2661 | Ushrahi | Mahuwal Mahal SO | 📍 841240 | Hasanpura | Post Office - PO |
| 2662 | Ushuri | Tarwara SO | 📍 841506 | Maharajganj | Post Office - PO |
| 2663 | Usri | Sohilpatti BO | 📍 841406 | Basantpur | Branch Post Office |
| 2664 | Usri | Sikandrpur BO | 📍 841434 | Barharia | Branch Post Office |
| 2665 | Usri Buzurg | Hasanpura SO | 📍 841236 | Hasanpura | Post Office - PO |
| 2666 | Usri Khurd | Hasanpura SO | 📍 841236 | Hasanpura | Post Office - PO |
| 2667 | Usti | Chandparsa BO | 📍 841240 | Daraundha | Branch Post Office |
| 2668 | Usuri | Sohilpatti BO | 📍 841406 | Basantpur | Branch Post Office |
| 2669 | Usuri Indauli | Barhria SO | 📍 841232 | Barharia | Post Office - PO |
| 2670 | Utarwar | Asaon SO | 📍 841287 | Andar | Post Office - PO |
| 2671 | Utkarmit Vidyalay | Saraya Sah Mohamd BO | 📍 841506 | Goriakothi | Branch Post Office |
| 2672 | Utkramit Pratmik Madhya Vidyalay Sivdah Jalalpur | Jalalpur BO | 📍 841506 | Maharajganj | Branch Post Office |
| 2673 | Utkrmit Madhya Vidyalay Bangra | Pipra Naryan BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 2674 | Utkrmit Madya Vidyalay Mithnpura | Pipra Naryan BO | 📍 841506 | Pachrukhi | Branch Post Office |
| 2675 | Uttar Patti Dindayalpur | Dindayalpur BO | 📍 841506 | Barharia | Branch Post Office |
| 2676 | Uttar tola | Gayaspur BO | 📍 841210 | Siswan | Branch Post Office |
| 2677 | Uttar Tola | Hardia BO | 📍 841226 | Pachrukhi | Branch Post Office |
| 2678 | Uttar tola | Punak BO | 📍 841239 | Darauli | Branch Post Office |
| 2679 | Uttar Tola Tarwara | Tarwara SO | 📍 841506 | Pachrukhi | Post Office - PO |
| 2680 | Uttartola BHarwajpur | Bhwrajpur BO | 📍 841231 | Andar | Post Office - PO |
| 2681 | VishaKhi Tola | Harihans BO | 📍 841286 | Hussainganj | Branch Post Office |
| 2682 | Walipur | Surwala BO | 📍 841227 | Pachrukhi | Branch Post Office |
| 2683 | Wasilpur | Harihar Pur Lalgarh BO | 📍 841434 | Barharia | Branch Post Office |
| 2684 | West KHalwa | Khalwa BO | 📍 841243 | Nautan | Branch Post Office |
| 2685 | Yadav Pur Road | Siwan HO | 📍 841226 | Siwan | Head Post Office - H |
| 2686 | Ziradei | Chhitanpur BO | 📍 841245 | Ziradei | Branch Post Office |
| 2687 | Ziradei | Makariyar BO | 📍 841245 | Ziradei | Branch Post Office |
| 2688 | Ziradei | Thepaha Bazar BO | 📍 841245 | Ziradei | Branch Post Office |
| 2689 | Ziradei | Zeradei SO | 📍 841245 | Ziradei | Post Office - PO |
| 2690 | Ziradei Bazar | Zeradei SO | 📍 841245 | Ziradei | Post Office - PO |
| 2691 | Ziradei Block | Zeradei SO | 📍 841245 | Ziradei | Post Office - PO |