| Place | Post Code |
|---|---|
| Marimangalam, Arcot | 632511 |
| Marudamangalam, Arcot | 632512 |
| Marutham, Arcot | 604407 |
| Mazharyur, Arcot | 632506 |
| Mecheri, Arcot | 632506 |
| Melapalandai, Arcot | 632318 |
| Melapudupakkam, Arcot | 632318 |
| Melathangal, Arcot | 632512 |
| Melnayakanpalayam, Arcot | 632507 |
| Melnelli, Arcot | 632506 |
| Melpulam, Arcot | 632518 |
| Melpuram, Arcot | 632503 |
| Mettu Gudisai, Arcot | 632512 |
| Mohanavaram, Arcot | 632512 |
| Mosur, Arcot | 632504 |
| Motti Naikan Palli, Arcot | 632512 |
| Mottur, Arcot | 632511 |
| Mullavadi, Arcot | 632501 |
| Munjurpattu, Arcot | 632057 |
| Muppathuvetti, Arcot | 632503 |
| Nagaleri, Arcot | 632506 |
| Naickan Thoppu, Arcot | 632507 |
| Nallur, Arcot | 632506 |
| Nambarai, Arcot | 632512 |
| Nangamangalam, Arcot | 632504 |
| Narayanapuram, Arcot | 632507 |