| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 651 | Kataria | Kataria BO | 📍 802202 | Piro | Branch Post Office |
| 652 | Katea | Kateyan BO | 📍 802152 | Behea | Branch Post Office |
| 653 | Kathrain | Siyadih BO | 📍 802223 | Charpokhari | Branch Post Office |
| 654 | Kathrain Milik | Siyadih BO | 📍 802223 | Charpokhari | Branch Post Office |
| 655 | Kaul Dehri | Kolodihri BO | 📍 802222 | Sahar | Branch Post Office |
| 656 | Kaunra | Dawan BO | 📍 802152 | Jagdishpur | Branch Post Office |
| 657 | Kaup | Kaup BO | 📍 802203 | Garhani | Branch Post Office |
| 658 | Kauriya | Haradiya BO | 📍 802152 | Behea | Branch Post Office |
| 659 | Kauwa Khot | Pasaur BO | 📍 802223 | Charpokhari | Branch Post Office |
| 660 | KawalKundi | Nawada Ben SO | 📍 802162 | Udwant Nagar | Post Office - PO |
| 661 | Kawalpura | Tiyar BO | 📍 802134 | Behea | Branch Post Office |
| 662 | Kazi Chak | Prasaunda BO | 📍 802112 | Shahpur | Branch Post Office |
| 663 | Kazi Chak | Kataria BO | 📍 802202 | Koilwar | Branch Post Office |
| 664 | Kazi Chak | Ramsahar BO | 📍 802311 | Barhara | Branch Post Office |
| 665 | Keotia | Tola Achraj Lal BO | 📍 802351 | Barhara | Branch Post Office |
| 666 | Keotiya | Chandakewatia BO | 📍 802166 | Shahpur | Branch Post Office |
| 667 | Kesari | Kesari BO | 📍 802155 | Jagdishpur | Branch Post Office |
| 668 | Keshopur | Majhiaon BO | 📍 802223 | Charpokhari | Branch Post Office |
| 669 | Keshopur | Mohanpur Karja BO | 📍 802311 | Barhara | Branch Post Office |
| 670 | Keshwa | Kesawan BO | 📍 802155 | Piro | Branch Post Office |
| 671 | Keshwarpur | Chasi BO | 📍 802201 | Agiaon | Branch Post Office |
| 672 | Kewal Patti | Sandaur BO | 📍 802154 | Behea | Branch Post Office |
| 673 | Kewatia | Amehata BO | 📍 802202 | Piro | Branch Post Office |
| 674 | Khagraha | Ranisagar BO | 📍 802165 | Shahpur | Branch Post Office |
| 675 | Khaira | Dulamchak- Chak Chaudhari BO | 📍 802208 | Sahar | Branch Post Office |
| 676 | Khairahin | Tar BO | 📍 802155 | Piro | Branch Post Office |
| 677 | Khairulla Chak | Bagar BO | 📍 802222 | Tarari | Branch Post Office |
| 678 | Khajuata | Deoria BO | 📍 802210 | Udwant Nagar | Branch Post Office |
| 679 | khajuria | Dhamar SO | 📍 802156 | Arrah | Post Office - PO |
| 680 | Khakhu Bandh | Bharasra Judge BO | 📍 802152 | Behea | Branch Post Office |
| 681 | Khalisa | Piania BO | 📍 802210 | Udwant Nagar | Branch Post Office |
| 682 | Khambha Dih | Kahndani BO | 📍 802202 | Piro | Branch Post Office |
| 683 | Khandani | Kahndani BO | 📍 802202 | Piro | Branch Post Office |
| 684 | Khandani Khurd | Kahndani BO | 📍 802202 | Piro | Branch Post Office |
| 685 | Khandaul | Phulari BO | 📍 802164 | Sandesh | Branch Post Office |
| 686 | Khaneth | Pawar BO | 📍 802201 | Agiaon | Branch Post Office |
| 687 | Khangaon | Khangaon BO | 📍 802161 | Koilwar | Branch Post Office |
| 688 | Kharaich | Agiaon SO | 📍 802201 | Agiaon | Post Office - PO |
| 689 | Kharainacha | Baghi BO | 📍 802201 | Agiaon | Branch Post Office |
| 690 | Kharanti | Siyadih BO | 📍 802223 | Charpokhari | Branch Post Office |
| 691 | Kharaon Buzurg | Khraonkalan BO | 📍 802208 | Sahar | Branch Post Office |
| 692 | Kharaon Chaturbhuj | Khraonkalan BO | 📍 802208 | Sahar | Branch Post Office |
| 693 | Kharaun | Dumaria BO | 📍 802207 | Shahpur | Branch Post Office |
| 694 | Kharauni | Belauna BO | 📍 802154 | Behea | Branch Post Office |
| 695 | Kharauni | Sarathua BO | 📍 802206 | Udwant Nagar | Branch Post Office |
| 696 | Kharwana | Karath SO | 📍 802205 | Tarari | Post Office - PO |
| 697 | Khawaspur | Sohara Tribhuani BO | 📍 802316 | Barhara | Branch Post Office |
| 698 | Khawaspur | Balua High School BO | 📍 802351 | Barhara | Branch Post Office |
| 699 | Khawaspur | Benwalia SO | 📍 802351 | Barhara | Post Office - PO |
| 700 | Khawaspur | Khawaspur BO | 📍 841312 | Barhara | Branch Post Office |