Pincode 600123 is a 6-digit postal code serving 3 post offices in Thiruvallur district, Tamil Nadu. Nazarethpettai SO is the Post Office for this area, located at 12.0421°N, 80.0795°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Thiruvallur delivery zone.
| Post Office | Type |
|---|---|
| Nazarethpettai SO | Post Office |
| Malayambakkam BO | Branch Post Office |
| Sembarambakkam BO | 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.