Pincode 601101 is a 6-digit postal code serving 4 post offices in Thiruvallur district, Tamil Nadu. Arni CPT SO is the Post Office for this area, located at 13.3386°N, 80.2514°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Thiruvallur delivery zone.
| Post Office | Type |
|---|---|
| Arni CPT SO | Post Office |
| Panayancheri BO | Branch Post Office |
| Pondavakkam BO | Branch Post Office |
| Rallapadi 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.
England's first foothold in India — the 1644 East India Company fort that became the seed of modern Madras / Chennai.
India's second-oldest museum (1851) — Pallava and Chola bronzes, Amaravati marbles, and a celebrated Indo-Saracenic theatre.