In Kottayam district, Kerala, PIN code 686543 is anchored by Erathuvadakara BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 3 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Erathuvadakara BO | BO | Branch Post Office |
| Cheruvally BO | BO | Branch Post Office |
| Manimala SO | SO | Sub Post Office |
