| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 601 | khakhari | Khakhari BO | 📍 805113 | Warisaliganj | Branch Post Office |
| 602 | khakri | Warisaliganj SO | 📍 805130 | Warisaliganj | Post Office - PO |
| 603 | Khalkhu | G B Kendua Konihar BO | 📍 805122 | Sirdala | Branch Post Office |
| 604 | Khanapur | Warisaliganj SO | 📍 805130 | Warisaliganj | Post Office - PO |
| 605 | Khanawan | Khanwan BO | 📍 805122 | Narhat | Branch Post Office |
| 606 | Khanpur | Dhanwan BO | 📍 805103 | Hisua | Branch Post Office |
| 607 | Khanpur | Hasua SO | 📍 805103 | Hisua | Post Office - PO |
| 608 | khanpur | Khanpur BO | 📍 805129 | Nawada | Branch Post Office |
| 609 | Khanpura | Rajauli SO | 📍 805125 | Sirdala | Post Office - PO |
| 610 | Khanpura | Baksanda BO | 📍 805126 | Akbarpur | Branch Post Office |
| 611 | Khaprah | Pakaribarwan SO | 📍 805124 | Nawada | Post Office - PO |
| 612 | Kharahwatanr | Rajauli SO | 📍 805125 | Rajauli | Post Office - PO |
| 613 | Kharant | Orhanpur SO | 📍 805123 | Nawada | Post Office - PO |
| 614 | Kharant | Budhauli BO | 📍 805124 | Pakribarawan | Branch Post Office |
| 615 | Kharaun | Sherpur BO | 📍 805127 | Sirdala | Branch Post Office |
| 616 | Khargu Bigha | Ohari BO | 📍 805104 | Roh | Branch Post Office |
| 617 | Kharij Jaman | Nemdarganj SO | 📍 805121 | Roh | Post Office - PO |
| 618 | Kharsan | Koriauna BO | 📍 805126 | Gobindpur | Branch Post Office |
| 619 | Kharsari | Kharsari BO | 📍 805106 | Kawakol | Branch Post Office |
| 620 | Khatangi | Khanwan BO | 📍 805122 | Sirdala | Branch Post Office |
| 621 | Khetal Bigha | Reula BO | 📍 805109 | Roh | Branch Post Office |
| 622 | Khijua | Andharwari BO | 📍 805125 | Rajauli | Branch Post Office |
| 623 | Khirbhojana | Nromurar BO | 📍 805130 | Warisaliganj | Branch Post Office |
| 624 | Khirkiya Kalan | Bahadurpur BO | 📍 805125 | Rajauli | Branch Post Office |
| 625 | Khushihal Bigha | Hasua SO | 📍 805103 | Nardiganj | Post Office - PO |
| 626 | Khusihali Bhita | Rajauli SO | 📍 805125 | Rajauli | Post Office - PO |
| 627 | Khutauni chak | Kadirganj SO | 📍 805104 | Nawada | Post Office - PO |
| 628 | Khutika | Sonsihari BO | 📍 805123 | Nawada | Branch Post Office |
| 629 | Kochgawan | Kochagoan BO | 📍 805130 | Warisaliganj | Branch Post Office |
| 630 | Kodwaria | Rajauli SO | 📍 805125 | Rajauli | Post Office - PO |
| 631 | Koiri Bigaha | Kundabhalua BO | 📍 805107 | Akbarpur | Branch Post Office |
| 632 | Kola | Dhamani BO | 📍 805125 | Rajauli | Branch Post Office |
| 633 | Konibar | Nurhat SO | 📍 805122 | Narhat | Branch Post Office |
| 634 | Konibar BO | Konibar BO | 📍 805114 | Nawada | Branch Post Office |
| 635 | Kopin | Biju Bigha BO | 📍 805122 | Meskaur | Branch Post Office |
| 636 | Koriyauna | Koriauna BO | 📍 805126 | Gobindpur | Branch Post Office |
| 637 | Kosirukhi | Kosi SO Nawada | 📍 805107 | Roh | Post Office - PO |
| 638 | Kosla | Kosla BO | 📍 805109 | Nardiganj | Branch Post Office |
| 639 | Kosthua | Bauri BO | 📍 805113 | Kashi Chak | Branch Post Office |
| 640 | Kuhila | Kuhila BO | 📍 805126 | Akbarpur | Branch Post Office |
| 641 | Kujha | Masaurha BO | 📍 805109 | Nardiganj | Branch Post Office |
| 642 | Kuldiha | Sirdala SO | 📍 805127 | Sirdala | Post Office - PO |
| 643 | Kulja | Koriauna BO | 📍 805126 | Gobindpur | Branch Post Office |
| 644 | Kulna | Kusmuhar BO | 📍 805126 | Akbarpur | Branch Post Office |
| 645 | Kumbhi | Khalsadhibari BO | 📍 805104 | Warisaliganj | Branch Post Office |
| 646 | Kumbhiyatari | Singar BO | 📍 805125 | Rajauli | Branch Post Office |
| 647 | Kumhar Bigaha | Tetariya BO | 📍 805102 | Gobindpur | Branch Post Office |
| 648 | Kumhar Bigaha | Budhwara BO | 📍 805121 | Akbarpur | Branch Post Office |
| 649 | Kumharua | Rajhat SO | 📍 805126 | Rajauli | Post Office - PO |
| 650 | Kumhiya | Kuhila BO | 📍 805126 | Gobindpur | Branch Post Office |