PIN code 691512 – Kollam, Kerala

691512 is the PIN code of 3 post offices in Kollam district, Kerala, served by the Odanavattom SO sub office.

Post office	Type	Delivery	Division
Odanavattom SOMap	Post office	Yes	Quilon Division
Kudavattur BOMap	Branch office	Yes	Quilon Division
Muttara 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.