In Pathanamthitta district, Kerala, PIN code 689513 is anchored by Mammoodu 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 |
|---|---|---|
| Mammoodu BO | BO | Branch Post Office |
| Nariapuram SO | SO | Sub Post Office |
