In Tuticorin district, Tamil Nadu, PIN code 628004 is anchored by Tt. Thermal Power Plant S.O, 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 |
|---|---|---|
| Tt. Thermal Power Plant S.O | SO | Sub Post Office |
| Tuticorin Harbour Estate S.O | SO | Sub Post Office |
