PIN code 688531 – Alappuzha, Kerala

688531 is the PIN code of 2 post offices in Alappuzha district, Kerala, served by the Pattanacaud SO sub office.

Post office	Type	Delivery	Division
Pattanacaud SOMap	Post office	Yes	Alleppey Division
Andhakaranazhy BOMap	Branch office	Yes	Alleppey Division

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