| Place | Post Code |
|---|---|
| Mekkalur, Tiruvannamalai | 604601 |
| Melchettipattu, Tiruvannamalai | 606707 |
| Melkachirapattu, Tiruvannamalai | 606753 |
| Meppaturai, Tiruvannamalai | 606802 |
| Mettuchathiram, Tiruvannamalai | 606604 |
| Mettupalayam, Tiruvannamalai | 604601 |
| Mottur, Tiruvannamalai | 606604 |
| Mukkannan Puradai, Tiruvannamalai | 606752 |
| Munjurampattu, Tiruvannamalai | 606811 |
| Muslim Kottai, Tiruvannamalai | 606754 |
| Mutharasampundi, Tiruvannamalai | 606802 |
| Na. Pudur, Tiruvannamalai | 606755 |
| Nachchianandal, Tiruvannamalai | 606753 |
| Nadalarganandal, Tiruvannamalai | 606804 |
| Nadupattu, Tiruvannamalai | 606808 |
| Nallavanpalayam, Tiruvannamalai | 606603 |
| Nanarpalayam, Tiruvannamalai | 606806 |
| Naraiyur, Tiruvannamalai | 606754 |