PIN code 631605 belongs to Nathanallur B.O (Branch Post Office), located in Kanchipuram district, Tamil Nadu. It falls under the Southern Postal Region and is served by 7 post offices in total.
| Post office | Type | Full name |
|---|---|---|
| Nathanallur B.O | BO | Branch Post Office |
| Avalur B.O | BO | Branch Post Office |
| Puliambakkam B.O | BO | Branch Post Office |
| Thammanur B.O | BO | Branch Post Office |
| Uttukadu B.O | BO | Branch Post Office |
| Asoor B.O | BO | Branch Post Office |
| Walajabad S.O | SO | Sub Post Office |
