Anmarudai BO is the primary post office registered under PIN code 604504 in Tiruvannamalai, Tamil Nadu. This code sits within the Southern Postal Region, with 5 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Anmarudai BO | BO | Branch Post Office |
| Melsishamangalam BO | BO | Branch Post Office |
| Avaniapuram BO | BO | Branch Post Office |
| Munugapattu BO | BO | Branch Post Office |
| Tirumani SO | SO | Sub Post Office |
