PIN code 600057 – Chennai, Tamil Nadu
600057 is the PIN code of 3 post offices in Chennai district, Tamil Nadu, served by the Ennore Thermal Station SO sub office.
| Post office | Type | Delivery | Division |
|---|---|---|---|
| Ennore Thermal Station SOMap | Post office | Yes | Tambaram Division |
| Ernavur SOMap | Post office | No | Tambaram Division |
| Kamarajnagar BOMap | Branch office | No | Tambaram Division |
Source: India Post PIN code directory (Open Government Data). Branch offices usually get mail through their sub or head office.