| Place | Post Code |
|---|---|
| Lokanathpur, Central) | 756030 |
| Machadiha, Central) | 756029 |
| Machhada, Central) | 756080 |
| Machhia, Central) | 756029 |
| Madhubharda, Central) | 756029 |
| Mahadevsarai, Central) | 756029 |
| Mahisali, Central) | 756028 |
| Maisali, Central) | 756029 |
| Majumdiha, Central) | 756029 |
| Malisahi, Central) | 756027 |
| Manatapal, Central) | 756081 |
| Mandarati, Central) | 756029 |
| Mandarda, Central) | 756022 |
| Mandrukula, Central) | 756029 |
| Mandurukula, Central) | 756029 |
| Mangalpur, Central) | 756029 |
| Mankardagadia, Central) | 756029 |
| Manudiha, Central) | 756029 |
| Mathani, Central) | 756029 |
| Melaka, Central) | 756029 |