| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 501 | Bisuni Bagicha | Khodaganj BO | 📍 801303 | Ekangarsarai | Branch Post Office |
| 502 | Bisunpur | Kanhaiya Ganj BO | 📍 801306 | Ekangarsarai | Branch Post Office |
| 503 | Biswak | Beshwak BO | 📍 801303 | Islampur | Branch Post Office |
| 504 | Block | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 505 | Bloha | Damodarpur Waldha BO | 📍 801305 | Nagar Nausa | Branch Post Office |
| 506 | Bodhi Bigha Ramghat | Bodhibigharamghat BO | 📍 801305 | Nagar Nausa | Branch Post Office |
| 507 | Bola Bigha | Telhara SO Nalanda | 📍 801306 | Ekangarsarai | Post Office - PO |
| 508 | BoliBag | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 509 | Boriawan | Oriyawan BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 510 | Bowri dih | Borisarai BO | 📍 801303 | Islampur | Branch Post Office |
| 511 | Bowri Sarai | Borisarai BO | 📍 801303 | Islampur | Branch Post Office |
| 512 | Brijpur | Nanaura BO | 📍 803113 | Noorsarai | Branch Post Office |
| 513 | Brju Bigha | Arjunsarthuya BO | 📍 801303 | Islampur | Branch Post Office |
| 514 | Budhai Bigha | Goror BO | 📍 803116 | Rajgir | Branch Post Office |
| 515 | Budhaul | Ganpura BO | 📍 803113 | Noorsarai | Branch Post Office |
| 516 | Bujruk | Pawa BO | 📍 803115 | Giriak | Branch Post Office |
| 517 | Bujurgi Tola | Hargawan BO | 📍 803216 | Bihar | Branch Post Office |
| 518 | Bulla bigha | Gurusaranpu BO | 📍 803114 | Ben | Branch Post Office |
| 519 | Burhan Nagar | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 520 | Burhannagar south Side | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 521 | Butaha | Jana BO | 📍 803107 | Asthawan | Branch Post Office |
| 522 | C O Opretive Bank Road | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 523 | Cambridge School | Ranabigha BO | 📍 803216 | Bihar | Branch Post Office |
| 524 | Carpenter Tola | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 525 | Central School | Islampur SO Nalanda | 📍 801303 | Islampur | Post Office - PO |
| 526 | Chabilapur B O | Chhabilapur BO | 📍 803216 | Bihar | Branch Post Office |
| 527 | Chabilapur BO | Ramchandrapur SO | 📍 803216 | Bihar | Post Office - PO |
| 528 | Chain Pur | Nekpur BO | 📍 803116 | Rajgir | Branch Post Office |
| 529 | Chainpur | Mahmuda BO | 📍 801303 | Islampur | Branch Post Office |
| 530 | Chainpur | Jaitpur BO | 📍 801307 | Tharthari | Branch Post Office |
| 531 | Chainpur | Sarthua BO | 📍 803110 | Chandi | Branch Post Office |
| 532 | Chak Bhui | Silao SO | 📍 803117 | Rajgir | Post Office - PO |
| 533 | Chak Chandasi | Nursarai SO | 📍 803113 | Noorsarai | Post Office - PO |
| 534 | Chak dault | Chandhari BO | 📍 801303 | Islampur | Branch Post Office |
| 535 | Chak Hanifa | Bajitpur Mudhari BO | 📍 803110 | Harnaut | Branch Post Office |
| 536 | Chak Hazari | Kaliyachak BO | 📍 801302 | Hilsa | Branch Post Office |
| 537 | Chak Jainab | Gonawan BO | 📍 803110 | Bihar | Branch Post Office |
| 538 | Chak Lodipur | Oriyawan BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 539 | Chak Musahari | Ekangerdih BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 540 | Chak Rasulpur | Ranabigha BO | 📍 803216 | Bihar | Branch Post Office |
| 541 | Chakakil | Durgawan BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 542 | Chakdhi | Asthawan SO | 📍 803107 | Asthawan | Post Office - PO |
| 543 | Chakdhi | Chakdin BO | 📍 811103 | Asthawan | Branch Post Office |
| 544 | Chakdilawar | Tungi BO | 📍 803216 | Bihar | Branch Post Office |
| 545 | Chakhami | Birju Milki BO | 📍 803110 | Harnaut | Branch Post Office |
| 546 | Chaki Hundari | Diyawan BO | 📍 801304 | Karai Parsurai | Branch Post Office |
| 547 | Chakjohara Khurd | Juniar BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 548 | Chakjohora Kala | Juniar BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 549 | Chakkhirauti | Ekangerdih BO | 📍 801301 | Ekangarsarai | Branch Post Office |
| 550 | Chakmaphi | Ekangerdih BO | 📍 801301 | Ekangarsarai | Branch Post Office |