In Chengalpattu district, Tamil Nadu, PIN code 603209 is anchored by Maraimalai Nagar SO, a Sub Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 2 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Maraimalai Nagar SO | SO | Sub Post Office |
| Panangottur BO | BO | Branch Post Office |
