| Place | Post Code |
|---|---|
| Kabar, Magadh) | 824207 |
| Kachanpur, Magadh) | 824207 |
| Kaiatanr, Magadh) | 824207 |
| Kailash Math, Magadh) | 824207 |
| Kairiya Madanpur, Magadh) | 824207 |
| Kaithisadpur, Magadh) | 824207 |
| Kalyanpur, Magadh) | 824116 |
| Kanaudi, Magadh) | 824207 |
| Kanharpur, Magadh) | 824207 |
| Karai, Magadh) | 824207 |
| Karimdas, Magadh) | 824207 |
| Karmain, Magadh) | 824207 |
| Kasturi Khap, Magadh) | 824207 |
| Kauriya, Magadh) | 824207 |
| Ker, Magadh) | 824235 |
| Khabhra, Magadh) | 824207 |
| Khaira, Magadh) | 824207 |
| Khajuri, Magadh) | 824302, 824207 |
| Khatnahi, Magadh) | 824116 |
| Khawaspur, Magadh) | 824207 |
| Koch, Magadh) | 824207 |
| Korap, Magadh) | 824207 |
| Kumhatti, Magadh) | 841235 |
| Kunin, Magadh) | 824207 |
| Kurmanwan, Magadh) | 824235 |
| Lodipur, Magadh) | 824207 |
| Madanpur, Magadh) | 824207 |
| Mahmudpur, Magadh) | 824207 |
| Majathi, Magadh) | 824116 |
| Majhiawan, Magadh) | 824207 |