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What is a PIN Code?
A Postal Index Number (PIN), or PIN Code, is a six-digit numerical code used by India Post strictly for the sorting and delivery of mail. The system was introduced on August 15, 1972, by Shriram Bhikaji Velankar, an additional secretary in the Union Ministry of Communications. The primary objective was to simplify the manual sorting of mail and eliminate confusion caused by incorrect addresses, similar place names, and different languages used by the public.
Today, the PIN code is crucial not just for post cards, but for courier services, e-commerce deliveries (like Amazon and Flipkart), and official government identification processes (Aadhaar, PAN cards).
Structure of an Indian PIN Code
Every digit in the 6-digit code has a specific meaning:
- 1st Digit: Indicates the Zone (North, East, West, South, or Army).
- 2nd Digit: Indicates the Sub-zone (usually the State or Union Territory).
- 3rd Digit: Indicates the Sorting District within that region.
- Last 3 Digits: Identify the specific Post Office that delivers the mail.
Did You Know?
There are 9 PIN regions in India:
- 1, 2: North (Delhi, Punjab...)
- 3, 4: West (Maharashtra, Gujarat...)
- 5, 6: South (TN, Karnataka...)
- 7, 8: East (WB, Odisha...)
- 9: Army Postal Service (APS)
Major Post Offices in Delhi & Mumbai
| City | Post Office Name | PIN Code |
|---|---|---|
| Delhi | New Delhi G.P.O. (Head Office) | 110001 |
| Delhi | Connaught Place | 110001 |
| Delhi | Parliament House | 110001 |
| Mumbai | Mumbai G.P.O. (Head Office) | 400001 |
| Mumbai | Dadar H.O. | 400014 |
| Mumbai | Andheri East | 400069 |
Use the search bar above to find details for over 1.5 lakh post offices across India, including postal circles in Bangalore, Chennai, Kolkata, and Hyderabad.
Complete Guide to Indian Postal Services & PIN Codes
India possesses the largest postal network in the world, handled by the Department of Posts (DoP), commonly known as India Post. With over 1,55,000 post offices across the country, the system serves as the backbone of India's communication and logistics. Whether you are sending a letter to a remote village in the Himalayas or a Speed Post to a metro city like Mumbai, the system relies entirely on a unique 6-digit number known as the Postal Index Number (PIN).
This directory helps you instantly locate the correct PIN code for any area, ensuring your parcels, courier shipments (like Amazon, Flipkart, BlueDart), and government documents reach their destination without delay.
Understanding the 6-Digit PIN Format
The PIN code system was introduced on August 15, 1972, to simplify mail sorting. Here is how to decode the 6 digits:
- Digit 1: Represents the Zone. India is divided into 9 zones (8 geographical + 1 for the Indian Army).
- Digit 2: Represents the Sub-Zone, which usually corresponds to a specific State or Union Territory.
- Digit 3: Indicates the Sorting District within that region.
- Digits 4-6: Identify the specific Post Office delivery branch.
ZIP Code vs. PIN Code
Many people ask: "What is the ZIP code of India?"
The answer is: India does not use ZIP Codes.
"ZIP Code" is a term used exclusively in the United States. In India, the equivalent is the PIN Code. If an international website asks for your ZIP code, simply enter your 6-digit Indian PIN code.
List of Postal Circles in India
The country is divided into 23 postal circles to manage operations efficiently. Here are the zone codes for major regions:
| Zone Code | Region / States Covered |
|---|---|
| 11-13 | Delhi, Haryana, Punjab, Chandigarh, Himachal Pradesh |
| 20-28 | Uttar Pradesh, Uttarakhand |
| 30-34 | Rajasthan, Gujarat, Daman & Diu |
| 40-44 | Maharashtra, Goa, Madhya Pradesh, Chhattisgarh |
| 50-53 | Telangana, Andhra Pradesh, Karnataka |
| 60-64 | Tamil Nadu, Kerala, Lakshadweep |
| 70-74 | West Bengal, Odisha, North Eastern States |
| 80-85 | Bihar, Jharkhand |
Popular India Post Services
Speed Post
The market leader in domestic express delivery. It offers time-bound delivery with tracking features across the country.
Registered Post
A secure way to send documents. The addressee must sign upon delivery, making it ideal for legal and official papers.
e-Money Order
A quick way to transfer money to rural areas where digital banking may not be fully accessible yet.
Disclaimer: This website is a privately owned directory and is not affiliated with the Government of India or India Post. All data is sourced for informational purposes only.