PIN code 603405 belongs to Ponpathirkoodam BO (Branch Post Office), located in Chengalpattu district, Tamil Nadu. It falls under the Southern Postal Region and is served by 6 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Ponpathirkoodam BO | BO | Branch Post Office |
| Salur BO | BO | Branch Post Office |
| Sogandi BO | BO | Branch Post Office |
| Vallipuram BO | BO | Branch Post Office |
| Anur BO | BO | Branch Post Office |
| Ponvilainthakalathur SO | SO | Sub Post Office |
