PIN code 631211 – Thiruvallur, Tamil Nadu
631211 is the PIN code of 3 post offices in Thiruvallur district, Tamil Nadu, served by the Saraswathinagar S.O sub office.
| Post office | Type | Delivery | Division |
|---|---|---|---|
| Saraswathinagar S.OMap | Post office | Yes | Kanchipuram Division |
| Karthikeyapuram B.OMap | Branch office | Yes | Kanchipuram Division |
| Kasavarajpetta B.OMap | Branch office | Yes | Kanchipuram Division |
Source: India Post PIN code directory (Open Government Data). Branch offices usually get mail through their sub or head office.