Pincode 631206 is a 6-digit postal code serving 4 post offices in Thiruvallur district, Tamil Nadu. Madduru S.O is the Post Office for this area, located at 13.2286°N, 79.5097°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Thiruvallur delivery zone.
| Post Office | Type |
|---|---|
| Madduru S.O | Post Office |
| Buchireddipalli B.O | Branch Post Office |
| Krishnasamudram B.O | Branch Post Office |
| Ramasamudram 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.