Pincode 631301 is a 6-digit postal code serving 6 post offices in Thiruvallur district, Tamil Nadu. Ammavarikuppam S.O is the Post Office for this area, located at 13.1773°N, 79.4184°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Thiruvallur delivery zone.
| Post Office | Type |
|---|---|
| Ammavarikuppam S.O | Post Office |
| Balapuram B.O | Branch Post Office |
| Chandravilasapuram B.O | Branch Post Office |
| Kadananagaram B.O | Branch Post Office |
| Mahankalikapuram B.O | Branch Post Office |
| Thyagapuram B.O | Branch Post Office |
Data sourced from India Post, Department of Posts, Government of India. Data last verified: May 2026.
Thiruvallur, Tamil Nadu. Map data: OpenStreetMap, CARTO.