| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 601 | Rangavita | Galgalia SO | 📍 855106 | Thakurganj | Post Office - PO |
| 602 | Rani | Dhanpatganj BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 603 | Rasia | B.B. Bharatpur BO | 📍 855108 | Thakurganj | Branch Post Office |
| 604 | Rasiadangi | Poth RS BO | 📍 855117 | Pothia | Branch Post Office |
| 605 | Rasulganj | Modho BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 606 | Ratanpur | Panasihat BO | 📍 855117 | Pothia | Branch Post Office |
| 607 | Ratua | Poth RS BO | 📍 855117 | Pothia | Branch Post Office |
| 608 | Rohania | Dhanpatganj BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 609 | Rohia | Kanalyabarihat BO | 📍 855107 | Kochadhamin | Branch Post Office |
| 610 | Rohonia Milik | Dhanpatganj BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 611 | Ruidhasa | Bahadurganj SO Kishanganj | 📍 855101 | Bahadurganj | Post Office - PO |
| 612 | Ruidhasa | Ruidhasa BO | 📍 855116 | Thakurganj | Branch Post Office |
| 613 | Rupni | Rupani BO | 📍 855101 | Bahadurganj | Branch Post Office |
| 614 | Sabodangi | B.B. Bharatpur BO | 📍 855108 | Thakurganj | Branch Post Office |
| 615 | Sahagi | Chattar Gachhi BO | 📍 855117 | Pothia | Branch Post Office |
| 616 | Saithabari | Taiyabpur SO | 📍 855117 | Pothia | Post Office - PO |
| 617 | Sakaur | Natuapara BO | 📍 855107 | Bahadurganj | Branch Post Office |
| 618 | Sakhuadali | Gunjanmari BO | 📍 855116 | Thakurganj | Branch Post Office |
| 619 | Salgori | B B Bharatpur BO | 📍 855108 | Thakurganj | Branch Post Office |
| 620 | Samesar | Sameswar BO | 📍 855101 | Bahadurganj | Post Office - PO |
| 621 | Santha | Sontha SO | 📍 855115 | Kochadhamin | Post Office - PO |
| 622 | Saptia | Dogharia BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 623 | Saradighi | Panasihat BO | 📍 855117 | Pothia | Branch Post Office |
| 624 | Sarai | Sontha SO | 📍 855115 | Kochadhamin | Post Office - PO |
| 625 | Saraikuri | Kishanganj Bazar SO | 📍 855108 | Kishanganj | Post Office - PO |
| 626 | Saraikuri | Saraikuri BO | 📍 855108 | Thakurganj | Branch Post Office |
| 627 | Sarogora | Poth RS BO | 📍 855117 | Pothia | Branch Post Office |
| 628 | Sat Kauwa | Dighalbank BO | 📍 855101 | Dighalbank | Branch Post Office |
| 629 | Satbaulia | Chattar Gachhi BO | 📍 855117 | Pothia | Branch Post Office |
| 630 | Satbaulia Khurd | Chattar Gachhi BO | 📍 855117 | Pothia | Branch Post Office |
| 631 | Satbhitha | Kanalyabarihat BO | 📍 855107 | Kochadhamin | Branch Post Office |
| 632 | Satkhamhar | Singhia BO | 📍 855107 | Kishanganj | Branch Post Office |
| 633 | Satmeri | Laucha BO | 📍 855101 | Bahadurganj | Branch Post Office |
| 634 | Satmeri | Lohargarha BO | 📍 855101 | Dighalbank | Branch Post Office |
| 635 | Sehangaon | Dhanpatganj BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 636 | Serati Kamati | Jhala BO | 📍 855101 | Terhagachh | Branch Post Office |
| 637 | Sharma Toli | Bairia BO | 📍 855101 | Terhagachh | Branch Post Office |
| 638 | Shekhpura | Taiyabpur SO | 📍 855117 | Pothia | Post Office - PO |
| 639 | Shishabari | Shishabari BO | 📍 855115 | Dighalbank | Branch Post Office |
| 640 | Sikmi Bangaon | Lohargarha BO | 📍 855101 | Bahadurganj | Branch Post Office |
| 641 | Siktihar | Sontha SO | 📍 855115 | Bahadurganj | Post Office - PO |
| 642 | Siktiharuttarbasti | Sontha SO | 📍 855115 | Bahadurganj | Post Office - PO |
| 643 | Simalbari | G.M.Bathna BO | 📍 855107 | Kishanganj | Branch Post Office |
| 644 | Singhari | Singhari BO | 📍 855115 | Kochadhamin | Branch Post Office |
| 645 | Singhari Gobindpur | Khatia Pichhia BO | 📍 855117 | Pothia | Branch Post Office |
| 646 | Singhia | Lohargarha BO | 📍 855101 | Bahadurganj | Branch Post Office |
| 647 | Singhia | Singhia BO | 📍 855107 | Kishanganj | Branch Post Office |
| 648 | Singhia Chakandara | Bagalbari BO | 📍 855107 | Kochadhamin | Branch Post Office |
| 649 | Singhiakhari | Bagalbari BO | 📍 855107 | Kochadhamin | Branch Post Office |
| 650 | Singhiamari | Raipur BO | 📍 855107 | Pothia | Branch Post Office |