| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 601 | Khajura | Banki BO | 📍 847408 | Madhepur | Branch Post Office |
| 602 | Khajuri | Khajuri BO | 📍 847212 | Madhubani | Branch Post Office |
| 603 | Khajuri | Bheja BO | 📍 847408 | Madhepur | Branch Post Office |
| 604 | Khajuri | Phatki BO | 📍 847408 | Madhepur | Branch Post Office |
| 605 | Khangaon | Bathne BO | 📍 847236 | Pandaul | Branch Post Office |
| 606 | Khanjipur | Basuara BO | 📍 847212 | Madhubani | Branch Post Office |
| 607 | Kharagbani | Kharagwani BO | 📍 847224 | Babubarhi | Branch Post Office |
| 608 | Kharagpur | Belhi Bhawanipur BO | 📍 847108 | Laukahi | Branch Post Office |
| 609 | Kharaua | Tazpur BO | 📍 847109 | Jhanjharpur | Branch Post Office |
| 610 | Kharauwa | Kharaua BO | 📍 847238 | Madhubani | Branch Post Office |
| 611 | Khargawan | Amouza BO | 📍 847402 | Phulparas | Branch Post Office |
| 612 | Kharik | Rahua Sangram BO | 📍 847408 | Madhepur | Branch Post Office |
| 613 | kharrak | Lohna BO | 📍 847424 | Jhanjharpur | Branch Post Office |
| 614 | Khataia | Kataya BO | 📍 847225 | Basopatti | Branch Post Office |
| 615 | KhatuKharika | Kako BO | 📍 847404 | Rajnagar | Branch Post Office |
| 616 | Khauna | Khauna BO | 📍 847240 | Basopatti | Branch Post Office |
| 617 | khirher | Khirhar SO | 📍 847230 | Benipatti | Post Office - PO |
| 618 | Khoja | Sidhap Kalan BO | 📍 847226 | Ladania | Branch Post Office |
| 619 | Khojpur | Khozpur BO | 📍 847224 | Babubarhi | Branch Post Office |
| 620 | Khoknahi | Banka BO | 📍 847121 | Bisfi | Branch Post Office |
| 621 | khopa | Baikabishanpur BO | 📍 847402 | Ghoghardiha | Branch Post Office |
| 622 | Khor | Bhith Bhagwanpur BO | 📍 847408 | Madhepur | Branch Post Office |
| 623 | Khutauna | Biratpur Birauli BO | 📍 847223 | Benipatti | Branch Post Office |
| 624 | khutauna | Khutauna SO | 📍 847227 | Jhanjharpur | Post Office - PO |
| 625 | kiritpur | Keotna BO | 📍 847402 | Ghoghardiha | Branch Post Office |
| 626 | Kishunpur Barsam | Mehath BO | 📍 847404 | Jhanjharpur | Branch Post Office |
| 627 | Koilakh | Koilakh BO | 📍 847236 | Rajnagar | Branch Post Office |
| 628 | Koilpar | Chichrikanungo BO | 📍 847235 | Rajnagar | Branch Post Office |
| 629 | Kokri | R.A.P.Mills BO | 📍 846002 | Madhubani | Branch Post Office |
| 630 | Kolahi | Rataul BO | 📍 847403 | Lakhnaur | Branch Post Office |
| 631 | Koluahi | Kaluahi SO | 📍 847229 | Kaluahi | Post Office - PO |
| 632 | Konar | Baikabishanpur BO | 📍 847402 | Ghoghardiha | Branch Post Office |
| 633 | Konar | Garatol BO | 📍 847402 | Ghoghardiha | Branch Post Office |
| 634 | Korahia | Korahia BO | 📍 847226 | Jainagar | Branch Post Office |
| 635 | Kormauli | Karmauli BO | 📍 847229 | Kaluahi | Branch Post Office |
| 636 | kosbagaur | Ganauli BO | 📍 847401 | Andhratharhi | Branch Post Office |
| 637 | Kothia | Rashidpur BO | 📍 847229 | Khajauli | Branch Post Office |
| 638 | Kothia Bharaul | Kotjia Bharam BO | 📍 847404 | Jhanjharpur | Branch Post Office |
| 639 | kuar | Kuar BO | 📍 847226 | Jainagar | Branch Post Office |
| 640 | kukur doura | Kukurdaura BO | 📍 847108 | Laukahi | Branch Post Office |
| 641 | Kulhadia | Laukahi BO | 📍 847108 | Laukahi | Branch Post Office |
| 642 | Kulharia | Kulharia BO | 📍 847401 | Babubarhi | Branch Post Office |
| 643 | Kumar Khat | Kumarkhat BO | 📍 847232 | Kaluahi | Branch Post Office |
| 644 | Kumarkhad | Jhaloun BO | 📍 847232 | Ladania | Branch Post Office |
| 645 | Kumarkhad | Kumarkhat BO | 📍 847232 | Ladania | Branch Post Office |
| 646 | kundalmaria | Basopatti SO | 📍 847225 | Harlakhi | Post Office - PO |
| 647 | Kunwar | Nakti BO | 📍 847235 | Rajnagar | Branch Post Office |
| 648 | Kuriban | Dhabahi BO | 📍 847108 | Laukahi | Branch Post Office |
| 649 | Kurson | Chunni BO | 📍 847408 | Madhepur | Branch Post Office |
| 650 | Kusmahi | Nirmali SO Supaul | 📍 847452 | Laukahi | Branch Post Office |