PIN code 631206 – Thiruvallur, Tamil Nadu
631206 is the PIN code of 4 post offices in Thiruvallur district, Tamil Nadu, served by the Madduru S.O sub office.
| Post office | Type | Delivery | Division |
|---|---|---|---|
| Madduru S.OMap | Post office | Yes | Kanchipuram Division |
| Buchireddipalli B.OMap | Branch office | Yes | Kanchipuram Division |
| Krishnasamudram B.OMap | Branch office | Yes | Kanchipuram Division |
| Ramasamudram 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.