PIN code 631301 – Thiruvallur, Tamil Nadu
631301 is the PIN code of 6 post offices in Thiruvallur district, Tamil Nadu, served by the Ammavarikuppam S.O sub office.
| Post office | Type | Delivery | Division |
|---|---|---|---|
| Ammavarikuppam S.OMap | Post office | Yes | Kanchipuram Division |
| Balapuram B.OMap | Branch office | Yes | Kanchipuram Division |
| Chandravilasapuram B.OMap | Branch office | Yes | Kanchipuram Division |
| Kadananagaram B.OMap | Branch office | Yes | Kanchipuram Division |
| Mahankalikapuram B.OMap | Branch office | Yes | Kanchipuram Division |
| Thyagapuram 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.