PIN code 609003 belongs to Koranad South B.O (Branch Post Office), located in Mayiladuthurai district, Tamil Nadu. It falls under the Southern Postal Region and is served by 6 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Koranad South B.O | BO | Branch Post Office |
| Sholampettai B.O | BO | Branch Post Office |
| Chittarkadu B.O | BO | Branch Post Office |
| Mayiladuthurai West B.O | BO | Branch Post Office |
| Mappadugai B.O | BO | Branch Post Office |
| Mayiladuthurai R.S S.O | SO | Sub Post Office |
