PIN code 600099 – Chennai, Tamil Nadu

600099 is the PIN code of 2 post offices in Chennai district, Tamil Nadu, served by the Kolathur SO sub office.

Post office	Type	Delivery	Division
Kolathur SOMap	Post office	Yes	Tambaram Division
Lakshmipuram 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.