| Area-wise Number of Postal Colonies in Tamil Nadu* (December, 2005) | |
| Area | Number of Postal Colonies |
| Kodaikanal | |
| Karaikudi | |
| Kovilpatti | |
| Tuticorin | |
| Virudhunagar | |
| Rameswaram | |
| Udankudi Christianagraram | |
| Arumuganeri | |
| Nagercoil | |
| Podanur | |
| Gobichettipalayam | |
| Udagamandalam | |
| Coonoor | |
| Wellington | |
| Aravangadu | |
| Kothagiri | |
| Makkinaickenpatti | |
| Valparai | |
| Chinna Tirupathi | |
| Mettur Dam | |
| Mettupalayam | |
| Bhavani Sagar | |
| Talavadi | |
| Tirupattur | |
| Trichy | |
| Pudukottai | |
| Perambalur | |
| Boiler Project | |
| Mannapuram | |
| Nayvelli | |
| Channai | |
| Vellore | |
| Tamil Nadu | |
| India | |
