PIN code 600021 – Chennai, Tamil Nadu

600021 is the PIN code of 2 post offices in Chennai district, Tamil Nadu, served by the Washermanpet East S.O sub office.

Post office	Type	Delivery	Division
Washermanpet East S.OMap	Post office	No	Chennai City North Division
Washermanpet S.OMap	Post office	Yes	Chennai City North Division

Source: India Post PIN code directory (Open Government Data). Branch offices usually get mail through their sub or head office.