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Tamil Nadu / Thiruvallur / Poonamallee SO / 600056
Circle Name Tamilnadu Circle
Region Name Chennai City Region
Division Name Tambaram Division
Office Name Poonamallee SO
PIN Code 600056
Office Type PO
District Thiruvallur
State Tamil Nadu
Location for Poonamallee SO, Thiruvallur, Tamil Nadu, 600056
Post Offices with same PIN Code
600056 - Kattupakkam BO - Tamil Nadu
600056 - Poonamallee SO - Tamil Nadu
600056 - Senneerkuppam BO - Tamil Nadu


A Postal Index Number (PIN or PIN Code) refers to a six-digit code in the Indian postal code system used by India Post.

The PIN system was introduced on 15 August 1972. The first digit of a PIN indicates the zone, the second indicates the sub-zone, and the third, combined with the first two, indicates the sorting district within that zone. The final three digits are assigned to individual post offices within the sorting district.


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