Pincode 631203 is a 6-digit postal code serving 10 post offices in Thiruvallur district, Tamil Nadu. Kadambathur S.O is the Post Office for this area, located at 13.6000°N, 79.5100°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Thiruvallur delivery zone.
| Post Office | Type |
|---|---|
| Kadambathur S.O | Post Office |
| Egattur B.O | Branch Post Office |
| Kaivandur B.O | Branch Post Office |
| Pandur B.O | Branch Post Office |
| Pattaraiperumbudur B.O | Branch Post Office |
| Pudumavilangai B.O | Branch Post Office |
| Selai B.O | Branch Post Office |
| Senji B.O | Branch Post Office |
| Tirupasur B.O | Branch Post Office |
| Vidaiyur 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.