Durgainammiyandal B.O is the primary post office registered under PIN code 606604 in Tiruvannamalai, Tamil Nadu. This code sits within the Southern Postal Region, with 7 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Durgainammiyandal B.O | BO | Branch Post Office |
| Kiliyapattu BO | BO | Branch Post Office |
| Esanyamadam SO | SO | Sub Post Office |
| Adaiyur BO | BO | Branch Post Office |
| Adiannamalai BO | BO | Branch Post Office |
| Inamkariyandal BO | BO | Branch Post Office |
| Vengikkal SO | SO | Sub Post Office |
