PIN code 600078 belongs to Kalaignar Karunanidhi Nagar S.O (Sub Post Office), located in Chennai district, Tamil Nadu. It falls under the Southern Postal Region and is served by 1 post office in total.
| Post office | Type | Full name |
|---|---|---|
| Kalaignar Karunanidhi Nagar S.O | SO | Sub Post Office |
