In Salem district, Tamil Nadu, PIN code 636404 is anchored by Andikarai B.O, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 3 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Andikarai B.O | BO | Branch Post Office |
| Karuppureddiyur B.O | BO | Branch Post Office |
| Gonur S.O | SO | Sub Post Office |
