PIN code 680307 belongs to Chalakudi South SO (Sub Post Office), located in Thrissur district, Kerala. It falls under the Southern Postal Region and is served by 3 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Chalakudi South SO | SO | Sub Post Office |
| Chalakudi HO | HO | Head Post Office |
| Chalakudi Town SO | SO | Sub Post Office |
