| Place | Post Code |
|---|---|
| Malayalipettai, Maduranthakam | 603303 |
| Mamandur, Maduranthakam | 603111 |
| Mambattu, Maduranthakam | 603308 |
| Mangalam, Maduranthakam | 603107 |
| Mariputhur, Maduranthakam | 603306 |
| Mathur, Maduranthakam | 603319 |
| Melakandai, Maduranthakam | 603311 |
| Melavalam, Maduranthakam | 603303 |
| Meyyur, Maduranthakam | 603111 |
| Minnal Sithamur, Maduranthakam | 603307 |
| Minnalkilminnal, Maduranthakam | 603307 |
| Mogalvadi, Maduranthakam | 603201 |
| Moosivakkam, Maduranthakam | 603405 |
| Morapakkam, Maduranthakam | 603306 |
| Mulli, Maduranthakam | 603303 |
| Muniyanthangal, Maduranthakam | 603319 |
| Munnakulam, Maduranthakam | 603310 |
| Munuthikuppam, Maduranthakam | 603306 |
| Murugampakkam, Maduranthakam | 603306 |
| Murukkancheri, Maduranthakam | 603303 |
| Murungai, Maduranthakam | 603310 |
| Nallamur Keelakaranai, Maduranthakam | 603204 |
| Nallur, Maduranthakam | 603302 |
| Nedungal, Maduranthakam | 603310 |
| Neerpair, Maduranthakam | 603313 |
| Nelli, Maduranthakam | 603107 |