In Tiruvannamalai district, Tamil Nadu, PIN code 604505 is anchored by Ayalpadi BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 7 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Ayalpadi BO | BO | Branch Post Office |
| Sengadu BO | BO | Branch Post Office |
| Vadavanakkambadi BO | BO | Branch Post Office |
| Vallam Arni SO | SO | Sub Post Office |
| Nambedu BO | BO | Branch Post Office |
| Melnemili BO | BO | Branch Post Office |
| Melpathi BO | BO | Branch Post Office |
