PIN code 691538 – Kollam, Kerala

691538 is the PIN code of 3 post offices in Kollam district, Kerala, served by the Vettikavala SO sub office.

Post office	Type	Delivery	Division
Vettikavala SOMap	Post office	Yes	Quilon Division
Kokkad BOMap	Branch office	Yes	Quilon Division
Thalachira 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.