| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 451 | Kasba | Teghra SO | 📍 851133 | Teghra | Post Office - PO |
| 452 | Kasimpur | Gorgama BO | 📍 851211 | Matihani | Branch Post Office |
| 453 | Kasipur | Madhusudanpur BO | 📍 851211 | Balia | Branch Post Office |
| 454 | Katahri | Mahipa Tol BO | 📍 851211 | Dandari | Branch Post Office |
| 455 | Kataria | Pasopur BO | 📍 851112 | Bhagwanpur | Branch Post Office |
| 456 | Katarmala | Katarmala BO | 📍 851130 | Dandari | Branch Post Office |
| 457 | Katlupur | Rahatpur BO | 📍 851211 | Balia | Branch Post Office |
| 458 | Kauachaur | Mohanpur BO | 📍 851131 | Begusarai | Branch Post Office |
| 459 | Kazi Chak | Mansurchak SO | 📍 851128 | Mansurchak | Post Office - PO |
| 460 | Kazi Chak | Sripur SO | 📍 851132 | Cheria Bariarpur | Post Office - PO |
| 461 | Kazi Chak | Bari Ballia BO | 📍 851211 | Balia | Branch Post Office |
| 462 | Kazi Rasulpur | Raghunandanpur BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 463 | Kesabe | Keshave BO | 📍 851134 | Barauni | Branch Post Office |
| 464 | Khairpur Sarai | Rupasbaj BO | 📍 851111 | Bachhwara | Branch Post Office |
| 465 | Khajulia | Ahiyapur BO | 📍 851111 | Bachhwara | Branch Post Office |
| 466 | Khajuria | Bagras BO | 📍 848201 | Bakhri | Branch Post Office |
| 467 | Khakharua | Sital Rampur BO | 📍 848201 | Garhpura | Branch Post Office |
| 468 | Khamhar | Khamhar BO | 📍 851131 | Begusarai | Branch Post Office |
| 469 | Khamhar PO | Khamhar PO | 📍 851110 | Begusarai | Post Office - PO |
| 470 | khanjahanpur | Khanjahapur BO | 📍 851132 | Cheria Bariarpur | Branch Post Office |
| 471 | Khanjahanpur Pali | Churamachak BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 472 | Khanuan | Chhourahi BO | 📍 848202 | Chhorahi | Branch Post Office |
| 473 | Kharag Chak | Rampur BO | 📍 848201 | Bakhri | Branch Post Office |
| 474 | Kharagpur | Gorgama BO | 📍 851211 | Matihani | Branch Post Office |
| 475 | Kharaua Tola | Rampur Matihani BO | 📍 851129 | Matihani | Branch Post Office |
| 476 | Khatopur | Mirzapur Banduar SO | 📍 851129 | Begusarai | Post Office - PO |
| 477 | Khem Karanpur | Bihat SO | 📍 851135 | Barauni | Post Office - PO |
| 478 | Kheraj | Baraipura BO | 📍 848204 | Garhpura | Branch Post Office |
| 479 | Khizar Chak | Khizirchak BO | 📍 851112 | Teghra | Branch Post Office |
| 480 | Khodawandpur | Khodabandpur BO | 📍 848202 | Khudabandpur | Branch Post Office |
| 481 | Khudabandpur | Khodabandpur BO | 📍 848202 | Khudabandpur | Branch Post Office |
| 482 | Khurampur Chakor | Chhitraur BO | 📍 851129 | Matihani | Branch Post Office |
| 483 | Khusropur | Bikrampur BO | 📍 851132 | Cheria Bariarpur | Branch Post Office |
| 484 | Khutaun | Nonpur BO | 📍 851112 | Barauni | Branch Post Office |
| 485 | Kiratpur | Sanjat BO | 📍 851133 | Bhagwanpur | Branch Post Office |
| 486 | Kirtaul | Dhankaul BO | 📍 851112 | Teghra | Branch Post Office |
| 487 | Kishunpur | Parmanandpur BO | 📍 851211 | Balia | Branch Post Office |
| 488 | Kishunpur Arazi | Parmanandpur BO | 📍 851211 | Balia | Branch Post Office |
| 489 | Kodra | Katarmala BO | 📍 851130 | Dandari | Branch Post Office |
| 490 | Kohua | Madhusudanpur BO | 📍 851211 | Balia | Branch Post Office |
| 491 | Kolahsan | Chhourahi BO | 📍 848202 | Chhorahi | Branch Post Office |
| 492 | Korai | Korai BO | 📍 848204 | Garhpura | Branch Post Office |
| 493 | Koria | Koria Haibatpur BO | 📍 851127 | Begusarai | Branch Post Office |
| 494 | koria haibatpur | Koria Haibatpur BO | 📍 851127 | Naokothi | Branch Post Office |
| 495 | Korjana | Bashi BO | 📍 848202 | Cheria Bariarpur | Branch Post Office |
| 496 | Kumbhi | Meghaul SO | 📍 848202 | Cheria Bariarpur | Post Office - PO |
| 497 | Kumharson | Kumharson BO | 📍 848204 | Garhpura | Branch Post Office |
| 498 | Kuram Toli | Hanspur BO | 📍 851129 | Matihani | Branch Post Office |
| 499 | Kuriawan | Rajaur BO | 📍 848204 | Garhpura | Branch Post Office |
| 500 | Kurnwan | Kurwan BO | 📍 852161 | Bakhri | Branch Post Office |