| Place | Post Code |
|---|---|
| Peruveli, Maduranthakam | 603309 |
| Pilappur, Maduranthakam | 603111 |
| Pillanthikuppam, Maduranthakam | 603303 |
| Pinnampoondi, Maduranthakam | 603201 |
| Poondi, Maduranthakam | 603311 |
| Poragal, Maduranthakam | 603307 |
| Porpanankaranai, Maduranthakam | 603201 |
| Puducheri, Maduranthakam | 603306 |
| Pudupattu, Maduranthakam | 603303 |
| Pulikkoradu, Maduranthakam | 603319 |
| Pulipurakoil, Maduranthakam | 603308 |
| Pulithivakkam, Maduranthakam | 603314 |
| Puliyaranankottai, Maduranthakam | 603311 |
| Rajapalayam, Maduranthakam | 603307 |
| Sampathinallur, Maduranthakam | 603111 |
| Sathamai, Maduranthakam | 603303 |
| Seethapuram, Maduranthakam | 603301 |
| Semppondi, Maduranthakam | 603406 |
| Senayaneri, Maduranthakam | 603309 |
| Sendivakkam, Maduranthakam | 603319 |
| Sholamthangal, Maduranthakam | 603306 |
| Silavattam, Maduranthakam | 603306 |
| Sirudamur, Maduranthakam | 603307, 631606 |
| Sirunagalur, Maduranthakam | 603319 |
| Sirunallur, Maduranthakam | 603309 |
| Sirupairpandi, Maduranthakam | 603307 |