Understanding the Indian PIN Code System

The Indian PIN Code (Postal Index Number) is a six-digit numeric code introduced by India Post on 15^th August 1972  by the then Additional Secretary in the Ministry of Communications, Shriram Bhikaji Velankar to streamline mail delivery across the country.

Each digit in the PIN code plays a crucial role in identifying the exact location:

The first digit

The first digit of the PIN reflects the region. In India, there are 9 PIN regions, out of which first 8 stand for geographical location and 9 is especially used for the army postal service and is referred to as the functional zone.

Northern region – 1,2

Western region – 3,4

Southern region – 5,6

Eastern region – 7,8

Army postal service – 9

The first number of the  (PIN) denotes the region. There are nine different zones in total.

The first 2 digits of the PIN indicate the circle

Third digit: Sorting district

The third digit of a PIN, combined with the first two digits, represents a specific geographical region called a sorting district that is headquartered at the main post office of the largest city in the region and is known as the sorting office. A state may have one or more sorting districts depending on the volume of mail handled.

Fourth digit: Service route

The fourth digit represents the route on which a delivery office is located in the sorting district. This is “0” for offices in the core area of the sorting district.

Last two digits: Delivery office

The last two digits represent the delivery office within the sorting district starting from “01” which would be the General Post Office (GPO) or head office (HO). The numbering of the delivery office is done chronologically with higher numbers assigned to newer delivery offices. If the volume of mail handled at a delivery office is too large, a new delivery office is created and the next available PIN is assigned.^] Thus, two delivery offices situated next to each other will only have the first four digits in common.

Post offices in India are categorized as:

• H.O. (Head Office): The main post office in a region.
• S.O. (Sub Office): Smaller post offices under the H.O.
• B.O. (Branch Office): Local branches serving smaller areas.

How many PIN Codes are there in India?

India has a total of 19,101 PINs spanning 154,725 post offices except the Army Postal Service.

How to Use the PIN Code Finder Tool

Our PIN Code Finder Tool helps you quickly locate accurate postal information. You can search in two ways:

1. 1. Find PIN Code

Enter any combination of:

• City/Post Office: Start typing, and matching post offices will appear. Select one for precise results. (Example: Typing “Connaught” will display “Connaught Place H.O.”—selecting it retrieves PIN code 110001.)
• District: Enter a district to see all PIN codes in that area. (Example: Searching “Agra” lists all post offices in Agra district.)
• State: Entering only a state will prompt you to add more details (like city or district) to narrow results.

2. Find Address Details

Enter a 6-digit PIN Code to retrieve the corresponding post office, district, and state. (Example: Entering 400001 returns 6 results, including “ Mumbai GPO.”)

Features:

• Search Button: Fetches results based on your input.
• Reset Button: Clears all fields for a new search.

• Key Features of Our Tool
• 🔹 Smart Search – Auto-suggests post offices as you type.
• 🔹 Flexible Queries – Search by city, district, or PIN.
• 🔹 Quick Results – Instantly fetches accurate postal data.
• 🔹 User-Friendly – Simple Search and Reset buttons for easy navigation.

This tool is perfect for businesses, courier services, and individuals looking for quick and reliable postal information.

Try it now to simplify your address searches!