Pincode 603401 is a 6-digit postal code serving 6 post offices in Chengalpattu district, Tamil Nadu. Chunampet SO is the Post Office for this area, located at 12.2557°N, 79.9032°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Chengalpattu delivery zone.
| Post Office | Type |
|---|---|
| Chunampet SO | Post Office |
| Andarkuppam BO | Branch Post Office |
| Kadukkalur BO | Branch Post Office |
| Puthirankottai BO | Branch Post Office |
| Vannianallur BO | Branch Post Office |
| Velur BO | Branch Post Office |
Data sourced from India Post, Department of Posts, Government of India. Data last verified: May 2026.
Chengalpattu, Tamil Nadu. Map data: OpenStreetMap, CARTO.