Pincode 621851 is a 6-digit postal code serving 7 post offices in Ariyalur district, Tamil Nadu. Thirumazhapadi SO is the Post Office for this area, located at 11.1877°N, 79.2581°E. The first digit ‘6’ identifies the Tamil Nadu postal region; the full code pinpoints the Ariyalur delivery zone.
| Post Office | Type |
|---|---|
| Thirumazhapadi SO | Post Office |
| Aranmanaikurichi BO | Branch Post Office |
| Ilandaikudam BO | Branch Post Office |
| Kandirathitham BO | Branch Post Office |
| Koilesanai BO | Branch Post Office |
| PudukkottaiTirumalaivadi BO | Branch Post Office |
| Venganur BO | Branch Post Office |
Data sourced from India Post, Department of Posts, Government of India. Data last verified: May 2026.
Ariyalur, Tamil Nadu. Map data: OpenStreetMap, CARTO.