| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 401 | Jotawa | Samari Chak Pihani BO | 📍 271831 | Bhinga | Branch Post Office |
| 402 | Jurpaniya | Sirsia SO | 📍 271840 | Bhinga | Post Office - PO |
| 403 | Kaharanpur | Kotwa BO | 📍 271831 | Ikauna ** | Branch Post Office |
| 404 | Kahari | Chetia Murar BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 405 | Kailashpur | Ikauna SO | 📍 271845 | Ikauna ** | Post Office - PO |
| 406 | Kainduwa | Chaukgoi BO | 📍 271802 | Bhinga | Branch Post Office |
| 407 | Kaitholi | Siswara BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 408 | Kaitholi | Medikiya BO | 📍 271840 | Bhinga | Branch Post Office |
| 409 | Kajipur | Shahpur Bargadwa BO | 📍 271840 | Bhinga | Branch Post Office |
| 410 | Kakandhu | Sonwan BO | 📍 271804 | Ikauna ** | Branch Post Office |
| 411 | Kakara | Siswara BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 412 | Kakardari | Jabdi BO | 📍 271840 | Bhinga | Branch Post Office |
| 413 | Kala | Nasirganj BO | 📍 271804 | Bhinga | Branch Post Office |
| 414 | Kalkalwa | Jamdan BO | 📍 271803 | Bhinga | Branch Post Office |
| 415 | Kalkalwa | Kalkalwa BO | 📍 271803 | Bhinga | Branch Post Office |
| 416 | Kalkalwa | Sirsia SO | 📍 271840 | Bhinga | Post Office - PO |
| 417 | Kalyan Chak | Doobkalan BO | 📍 271804 | Ikauna ** | Branch Post Office |
| 418 | Kalyanpur | Ramnagra BO | 📍 271804 | Ikauna ** | Branch Post Office |
| 419 | Kalyanpur | Puredeen Namgarh BO | 📍 271805 | Ikauna ** | Branch Post Office |
| 420 | Kalyanpur | Shahpur Bara BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 421 | Kamadi | Gabbapur BO | 📍 271840 | Bhinga | Branch Post Office |
| 422 | Kamda | Gulara BO | 📍 271840 | Bhinga | Branch Post Office |
| 423 | Kamda | Sonbarsa BO | 📍 271840 | Bhinga | Branch Post Office |
| 424 | Kamla Bhari | Rampur Painda BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 425 | Kani Bojhi | Kanibojhi BO | 📍 271803 | Bhinga | Branch Post Office |
| 426 | Kanjarawa | Ikauna SO | 📍 271845 | Ikauna ** | Post Office - PO |
| 427 | Karaundi | Bhausawan BO | 📍 271804 | Ikauna ** | Branch Post Office |
| 428 | Karmohana | Mahdeiya BO | 📍 271805 | Ikauna ** | Branch Post Office |
| 429 | Karmullapur | Tiwari Gaon BO | 📍 271865 | Bhinga | Branch Post Office |
| 430 | Kashipur Musa | Chetia Murar BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 431 | Kasiapur | Naubasta BO | 📍 271831 | Bhinga | Branch Post Office |
| 432 | Kasiyapur | Ramnagra BO | 📍 271804 | Ikauna ** | Branch Post Office |
| 433 | Kataiya | Puredeen Namgarh BO | 📍 271805 | Ikauna ** | Branch Post Office |
| 434 | Katar | Chetia Murar BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 435 | Katawa | Dandey Kuinya BO | 📍 271875 | Bhinga | Branch Post Office |
| 436 | Kathara Mafi | Kathara Bazar BO | 📍 271803 | Bhinga | Branch Post Office |
| 437 | Kathautia | Akbarapur Semra BO | 📍 271831 | Bhinga | Branch Post Office |
| 438 | Kathautia | Bairagijot BO | 📍 271831 | Bhinga | Branch Post Office |
| 439 | Kathi | Mahdeiya BO | 📍 271805 | Ikauna ** | Branch Post Office |
| 440 | Katkuiya | Jogin Bharia BO | 📍 271831 | Bhinga | Branch Post Office |
| 441 | Katkuiya | Badal Pur BO | 📍 271840 | Bhinga | Branch Post Office |
| 442 | Katkuiya | Katkuiya BO | 📍 271840 | Bhinga | Branch Post Office |
| 443 | Katra | Shravasti SO | 📍 271805 | Ikauna ** | Post Office - PO |
| 444 | Kauapur | Manoharapur BO | 📍 271845 | Ikauna ** | Branch Post Office |
| 445 | Kauwapur | Banthihwa BO | 📍 271831 | Bhinga | Branch Post Office |
| 446 | Kayapur | Naubasta BO | 📍 271831 | Bhinga | Branch Post Office |
| 447 | Kervania | Ramgarhi BO | 📍 271831 | Ikauna ** | Branch Post Office |
| 448 | Kervania | Siswara BO | 📍 271835 | Ikauna ** | Branch Post Office |
| 449 | Kervania | Ikauna SO | 📍 271845 | Ikauna ** | Post Office - PO |
| 450 | Keshawapur | Takiya BO | 📍 271845 | Ikauna ** | Branch Post Office |