In Idukki district, Kerala, PIN code 685616 is anchored by Mattupatty ISP BO, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 2 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Mattupatty ISP BO | BO | Branch Post Office |
| Mattuppatti SO | SO | Sub Post Office |
