Allialamangalam BO is the primary post office registered under PIN code 606904 in Tiruvannamalai, Tamil Nadu. This code sits within the Southern Postal Region, with 6 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Allialamangalam BO | BO | Branch Post Office |
| Padagam BO | BO | Branch Post Office |
| Vilapakkam BO | BO | Branch Post Office |
| Mandakolathur SO | SO | Sub Post Office |
| Semmiyamangalam BO | BO | Branch Post Office |
| Pulivanandal BO | BO | Branch Post Office |
