PIN code 691511 – Kollam, Kerala

691511 is the PIN code of 2 post offices in Kollam district, Kerala, served by the Vellimon SO sub office.

Post office	Type	Delivery	Division
Vellimon SOMap	Post office	Yes	Quilon Division
Vellimon West 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.