In Kanchipuram district, Tamil Nadu, PIN code 631604 is anchored by Varanavasi B.O, a Branch Post Office. Mail addressed to this code is sorted through the Southern Postal Region, across 6 listed offices.
| Post office | Type | Full name |
|---|---|---|
| Varanavasi B.O | BO | Branch Post Office |
| Panruti B.O | BO | Branch Post Office |
| Sinnivakkam B.O | BO | Branch Post Office |
| Echoor B.O | BO | Branch Post Office |
| Kunnam B.O | BO | Branch Post Office |
| Thenneri S.O | SO | Sub Post Office |
