PIN code 621801 – Ariyalur, Tamil Nadu

621801 is the PIN code of 2 post offices in Ariyalur district, Tamil Nadu, served by the Andimadam SO sub office.

Post office	Type	Delivery	Division
Andimadam SOMap	Post office	Yes	Tiruchirapalli Division
Pattanamkurichi BOMap	Branch office	Yes	Tiruchirapalli Division

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