Chennai, formerly known as Madras, is the capital city of Tamil Nadu and one of the largest metropolitan cities in India. The city is known for its cultural heritage, educational institutions, ports, IT parks, automobile industries, and expanding residential neighborhoods. Due to its large geographical spread and dense population, Chennai is efficiently managed under the Indian postal system using PIN codes. This page provides a complete Chennai city area-wise PIN codes overview, designed to help users easily identify the correct postal code for their locality. Whether you are sending a courier, filling out online application forms, registering for government services, or verifying an address, knowing the accurate PIN code is essential. What is a PIN Code? A PIN code, or Postal Index Number, is a six-digit numeric code introduced by India Post to simplify and streamline mail delivery across the country. First digit indicates the postal zone Next two digits represent the postal cir...