| Place | Post Code |
|---|---|
| Kachanpur, Magadh) | 824124 |
| Kadiahi, Magadh) | 824124 |
| Kadiahi Kalan, Magadh) | 824124 |
| Kadiahi Khurd, Magadh) | 824124 |
| Kajhwan, Magadh) | 824124, 824113 |
| Kalen, Magadh) | 824124 |
| Kanokhar, Magadh) | 824124 |
| Kara, Magadh) | 824124 |
| Karsaon, Magadh) | 824121 |
| Kasim Bigha, Magadh) | 824124 |
| Kharanti, Magadh) | 824124 |
| Khathwara, Magadh) | 824124 |
| Khudwan, Magadh) | 824124 |
| Koraipur, Magadh) | 824124 |
| Kothia, Magadh) | 824113 |
| Kurmain, Magadh) | 824124 |
| Kusa, Magadh) | 824113 |
| Kusarhi, Magadh) | 824124 |
| Lahasa, Magadh) | 824125, 824122 |
| Lahsa, Magadh) | 824124 |
| Lasra, Magadh) | 824124 |
| Mahdewa, Magadh) | 824124 |
| Mahdi, Magadh) | 824124 |
| Mahsi, Magadh) | 824124 |
| Mahtha, Magadh) | 824121 |
| Mahthu, Magadh) | 824121 |
| Mahuawan, Magadh) | 824124 |
| Majhiawan, Magadh) | 824124 |
| Makhra, Magadh) | 824124 |
| Malwan, Magadh) | 824124 |