In Ernakulam district, Kerala, PIN code 686663 is anchored by Kizhmuri BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 4 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Kizhmuri BO | BO | Branch Post Office |
| Mamalassery BO | BO | Branch Post Office |
| Ramamangalam SO | SO | Sub Post Office |
| Ooramana BO | BO | Branch Post Office |
