PIN code 691020 – Kollam, Kerala

691020 is the PIN code of 2 post offices in Kollam district, Kerala, served by the Thattamala SO sub office.

Post office	Type	Delivery	Division
Thattamala SOMap	Post office	Yes	Quilon Division
Koottikada BOMap	Branch office	Yes	Quilon Division

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