PIN code 683511 belongs to Karumalloor BO (Branch Post Office), located in Ernakulam district, Kerala. It falls under the Southern Postal Region and is served by 5 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Karumalloor BO | BO | Branch Post Office |
| Neericode BO | BO | Branch Post Office |
| West Veliyathunad BO | BO | Branch Post Office |
| Panaikulam BO | BO | Branch Post Office |
| Alangad SO | SO | Sub Post Office |
