| Place | Post Code |
|---|---|
| Kongarampattu, Arani | 632311 |
| Kothandavadi, Arani | 606752 |
| Krishnavaram, Arani | 632314 |
| Kudisaikarai, Arani | 632316 |
| Kulamveedu Kattamedu, Arani | 632315 |
| Kulathur, Arani | 632311 |
| Kundru Medu, Arani | 632326 |
| Kunjanthangal, Arani | 632315 |
| Kuppam Kottamedu, Arani | 632311 |
| Kurumanthangal, Arani | 632315 |
| Ladapadi, Arani | 632317 |
| M.N. Palayam, Arani | 632312 |
| Madavilagam, Arani | 606907 |
| Madupurithangal, Arani | 632314 |
| Malayampattu, Arani | 606903 |
| Mamandur, Arani | 632317 |
| Manthoppu, Arani | 632315 |
| Maruderi, Arani | 632317 |
| Mattathari, Arani | 632317 |
| Meleri, Arani | 632314 |
| Melkalpoondi, Arani | 632317 |
| Melkuppam, Arani | 632311 |
| Melnagar, Arani | 632315 |
| Melvattam, Arani | 632312 |
| Mettukudisai, Arani | 632316 |
| Molvathangal, Arani | 632512 |