PIN code 686001 belongs to Thirunakkara SO (Sub Post Office), located in Kottayam district, Kerala. It falls under the Southern Postal Region and is served by 3 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Thirunakkara SO | SO | Sub Post Office |
| Kottayam HO | HO | Head Post Office |
| Kottayam North SO | SO | Sub Post Office |
