In Kottayam district, Kerala, PIN code 686603 is anchored by Chamakala BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 5 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Chamakala BO | BO | Branch Post Office |
| Kanjirathanam BO | BO | Branch Post Office |
| Kuruppamthara BO | BO | Branch Post Office |
| Manjoor SO | SO | Sub Post Office |
| Manjoor South BO | BO | Branch Post Office |
