| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 551 | Jiwapur | Manikpur BO | 📍 802128 | Rajpur | Branch Post Office |
| 552 | Jogapur | Deoria BO | 📍 802122 | Rajpur | Branch Post Office |
| 553 | Jogia | Jogia BO | 📍 802111 | Barhampur | Branch Post Office |
| 554 | Jokahi | Kamarpur BO | 📍 802102 | Buxar | Branch Post Office |
| 555 | Jug Chapra | Barki Nainijor BO | 📍 802112 | Barhampur | Branch Post Office |
| 556 | Kabir Chak | Belahari BO | 📍 802126 | Nawanagar | Branch Post Office |
| 557 | Kachainiya | Athar BO | 📍 802126 | Dumraon | Branch Post Office |
| 558 | Kadipur Kalan | Kukurahan BO | 📍 802123 | Itarhi | Branch Post Office |
| 559 | Kadipur Khurd | Kukurahan BO | 📍 802123 | Itarhi | Branch Post Office |
| 560 | Kailakh | Dhansoi SO | 📍 802117 | Rajpur | Post Office - PO |
| 561 | Kaithahar Kalan | Manikpur BO | 📍 802128 | Rajpur | Branch Post Office |
| 562 | Kaithahar Khurd | Manikpur BO | 📍 802128 | Rajpur | Branch Post Office |
| 563 | Kaithana | Indaur BO | 📍 802117 | Itarhi | Branch Post Office |
| 564 | Kaithi | Kaithi BO | 📍 802134 | Barhampur | Branch Post Office |
| 565 | kajariya | Nagpur BO | 📍 802122 | Rajpur | Branch Post Office |
| 566 | Kakaria | Banni BO | 📍 802128 | Rajpur | Branch Post Office |
| 567 | Kaleanpur | Indaur BO | 📍 802117 | Itarhi | Branch Post Office |
| 568 | Kaliyanpur | Indaur BO | 📍 802117 | Itarhi | Branch Post Office |
| 569 | Kalupur | Chausa SO Buxar | 📍 802114 | Rajpur | Post Office - PO |
| 570 | Kalyanpur Ditto | Chakki BO | 📍 802120 | Chakki | Branch Post Office |
| 571 | Kam Karahi | Attaon BO | 📍 802119 | Dumraon | Branch Post Office |
| 572 | Kamarpur | Kamarpur BO | 📍 802102 | Buxar | Branch Post Office |
| 573 | Kamdharpur | Khandricha BO | 📍 802126 | Dumraon | Branch Post Office |
| 574 | Kamhariya | Kamarpur BO | 📍 802102 | Buxar | Branch Post Office |
| 575 | Kamkarahi | Kamarpur BO | 📍 802102 | Buxar | Branch Post Office |
| 576 | Kanak Narayanpur | Akhauripur Gola BO | 📍 802114 | Chausa | Branch Post Office |
| 577 | Kanehri | Kanehari BO | 📍 802128 | Rajpur | Branch Post Office |
| 578 | Kanhupur | Chaubey Ke Prasia BO | 📍 802128 | Rajpur | Branch Post Office |
| 579 | Kanjharua | Khandricha BO | 📍 802126 | Dumraon | Branch Post Office |
| 580 | Kanjia | Belahari BO | 📍 802126 | Nawanagar | Branch Post Office |
| 581 | Kanpura | Itarhi SO | 📍 802123 | Rajpur | Post Office - PO |
| 582 | Kanpura | Unwas BO | 📍 802123 | Itarhi | Branch Post Office |
| 583 | Kanspatti | Sahiyar BO | 📍 802131 | Simri | Branch Post Office |
| 584 | Kant | Kant BO | 📍 802112 | Barhampur | Branch Post Office |
| 585 | Kapurpatti | Bisikala BO | 📍 802129 | Itarhi | Branch Post Office |
| 586 | Kapurpur | Umedpur BO | 📍 802112 | Barhampur | Branch Post Office |
| 587 | Karaila | Saisar Ganghari BO | 📍 802117 | Rajpur | Branch Post Office |
| 588 | Karanjuwa | Indaur BO | 📍 802117 | Itarhi | Branch Post Office |
| 589 | Karanpur | Dahiwar BO | 📍 802116 | Rajpur | Branch Post Office |
| 590 | Karanpura | Deokuli BO | 📍 802112 | Barhampur | Branch Post Office |
| 591 | Karauniyan | Kamarpur BO | 📍 802102 | Buxar | Branch Post Office |
| 592 | Karhansi | Karhshi BO | 📍 802102 | Buxar | Branch Post Office |
| 593 | Kariyakant | Girdharpur BO | 📍 802129 | Nawanagar | Branch Post Office |
| 594 | Karma | Itarhian BO | 📍 802117 | Rajpur | Branch Post Office |
| 595 | Karmi | Kukurahan BO | 📍 802123 | Itarhi | Branch Post Office |
| 596 | Karsar | Karsar BO | 📍 802129 | Nawanagar | Branch Post Office |
| 597 | Karuaj | Kasia BO | 📍 802126 | Dumraon | Branch Post Office |
| 598 | Kashia | Kasia BO | 📍 802126 | Dumraon | Branch Post Office |
| 599 | kashipur | Chunni BO | 📍 802114 | Chausa | Branch Post Office |
| 600 | Kasimpur | Indaur BO | 📍 802117 | Itarhi | Branch Post Office |