| Place | Post Code |
|---|---|
| Kakhra, Central) | 756039 |
| Kakudibada, Central) | 756036 |
| Kakudipada, Central) | 756036 |
| Kalahi, Central) | 756036 |
| Kali Patna, Central) | 756085 |
| Kamargadia, Central) | 756036 |
| Kanchangadia, Central) | 756036 |
| Kanpur, Central) | 756035 |
| Kantabani, Central) | 756035 |
| Kantabania, Central) | 756039 |
| Kanthibhauri, Central) | 756037 |
| Kanti Bhauri, Central) | 756037 |
| Kanyanagari, Central) | 756037 |
| Karanja Sole, Central) | 756085 |
| Kasimpur, Central) | 756038 |
| Kathakata, Central) | 756038 |
| Kaubani, Central) | 756036 |
| Kaurda, Central) | 756035 |
| Khageswarpur, Central) | 756039 |
| Khalgadia, Central) | 756035 |
| Kharibil, Central) | 756037 |
| Kharidchak, Central) | 756079 |
| Kharikabadi, Central) | 756038 |
| Kharsuan, Central) | 756036 |
| Khedsahi, Central) | 756036 |
| Khersahi, Central) | 756036 |
| Kirtania, Central) | 756037 |
| Kishorapur, Central) | 756036 |
| Kochiladangar, Central) | 756036 |
| Krushnanagar, Central) | 756085 |