| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 501 | Raisri | Rajeshwari BO | 📍 852214 | Chhatapur | Branch Post Office |
| 502 | Raisri Milik | Rajeshwari BO | 📍 852214 | Chhatapur | Branch Post Office |
| 503 | Rajpur | Ganpatganj SO Supaul | 📍 852109 | Raghopur | Post Office - PO |
| 504 | Rajpur | Tharbitta SO | 📍 852138 | Kishanpur | Post Office - PO |
| 505 | Rajpur | Rajpur BO | 📍 852218 | Pipra | Branch Post Office |
| 506 | Rajpur Arazi | Jia Ram Raghopur SO | 📍 852111 | Raghopur | Post Office - PO |
| 507 | Rajwara | Surpatganj SO | 📍 852137 | Chhatapur | Post Office - PO |
| 508 | Ram Bishunpur | Ram Bishanpur BO | 📍 852111 | Raghopur | Branch Post Office |
| 509 | Ramdat patti | Nemua BO | 📍 852130 | Supaul | Branch Post Office |
| 510 | Ramnagar | Ramnagar BO | 📍 852108 | Pipra | Branch Post Office |
| 511 | Ramnagar | Mohanpur BO | 📍 852137 | Chhatapur | Branch Post Office |
| 512 | Rampur | Jia Ram Raghopur SO | 📍 852111 | Raghopur | Post Office - PO |
| 513 | Rampur | Nemua BO | 📍 852130 | Supaul | Branch Post Office |
| 514 | Rampur | Lalpur BO | 📍 852137 | Chhatapur | Branch Post Office |
| 515 | Rampur | Rajpur BO | 📍 852218 | Pipra | Branch Post Office |
| 516 | Rampur | Sanskrit Nirmali BO | 📍 854339 | Basantpur | Branch Post Office |
| 517 | Raniganj | Bhimnagar Bairrage SO | 📍 854338 | Basantpur | Post Office - PO |
| 518 | Ranipatti | Banailipatti BO | 📍 854340 | Basantpur | Branch Post Office |
| 519 | Rasuar | Mungraha BO | 📍 847452 | Marauna | Branch Post Office |
| 520 | Rataho | Nirmali SO Supaul | 📍 847452 | Marauna | Branch Post Office |
| 521 | Ratan sar | Ratnasara BO | 📍 847452 | Chhatapur | Branch Post Office |
| 522 | Ratan sar | Gwalpara BO | 📍 852137 | Chhatapur | Branch Post Office |
| 523 | Ratanpur | Karjain Bazar SO | 📍 852215 | Basantpur | Post Office - PO |
| 524 | Ratauli | Ratauli BO | 📍 852138 | Pipra | Branch Post Office |
| 525 | Repauli | Kunauli BO | 📍 847451 | Nirmali | Post Office - PO |
| 526 | Sadanandpur | Bishanpur BO | 📍 852105 | Saraigarh Bhaptiyahi | Branch Post Office |
| 527 | Sahajpur | Saheban BO | 📍 854338 | Basantpur | Branch Post Office |
| 528 | Sahata | Girdharpatti BO | 📍 852137 | Chhatapur | Branch Post Office |
| 529 | Saheb Chakla | Sakhua BO | 📍 852218 | Pipra | Branch Post Office |
| 530 | Saheban | Saheban BO | 📍 854338 | Basantpur | Branch Post Office |
| 531 | Sait | Jia Ram Raghopur SO | 📍 852111 | Raghopur | Post Office - PO |
| 532 | Sakhua | Sakhua BO | 📍 852218 | Pipra | Branch Post Office |
| 533 | Samda | Saheban BO | 📍 854338 | Basantpur | Branch Post Office |
| 534 | Saraigarh | Saraigarh BO | 📍 852105 | Saraigarh Bhaptiyahi | Branch Post Office |
| 535 | Saraigarh Bhaptiyahi | Bhaptiyahi Bazar SO | 📍 852105 | Saraigarh Bhaptiyahi | Post Office - PO |
| 536 | Saranpur | Birpur SO Supaul | 📍 854340 | Basantpur | Post Office - PO |
| 537 | Saraunjabela | Sarojabela BO | 📍 847452 | Marauna | Branch Post Office |
| 538 | Sarhochia | Achalpur BO | 📍 852109 | Raghopur | Branch Post Office |
| 539 | Satanpatti | Hulas BO | 📍 852111 | Raghopur | Branch Post Office |
| 540 | Satkodaria | Achalpur BO | 📍 852109 | Raghopur | Branch Post Office |
| 541 | Semaria | Simaria BO | 📍 852218 | Tribeniganj | Branch Post Office |
| 542 | Shahpur | Chunni\ BO | 📍 852137 | Chhatapur | Branch Post Office |
| 543 | Shahpur Pirthipatti | Sahpur Prithbi Patti BO | 📍 852111 | Saraigarh Bhaptiyahi | Branch Post Office |
| 544 | Shankarpur | Balua Bazar SO | 📍 854339 | Basantpur | Post Office - PO |
| 545 | Shankarpur Doulat | Daulatpur BO | 📍 852215 | Raghopur | Branch Post Office |
| 546 | Shibnagar | Sanskrit Nirmali BO | 📍 854339 | Basantpur | Branch Post Office |
| 547 | Shivpuri | Tharbitta SO | 📍 852138 | Kishanpur | Post Office - PO |
| 548 | Shukha Nagar | Sukhanagar BO | 📍 852125 | Pratapganj | Branch Post Office |
| 549 | Siani | Siyana BO | 📍 852105 | Saraigarh Bhaptiyahi | Branch Post Office |
| 550 | Sihe | Sukhpur SO | 📍 852130 | Supaul | Post Office - PO |