In Tirunelveli district, Tamil Nadu, PIN code 627401 is anchored by Ambasamudram HO, a Head Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 2 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Ambasamudram HO | HO | Head Post Office |
| Ambasamudram East SO | SO | Sub Post Office |
