Understand DIGIPIN in two minutes.
DIGIPIN is India Post's 10-character digital address system — a unique code for every 4 m × 4 m square in India. Plain-English guides, answers to common questions, and everything you need to use it confidently.
Find what you need
Whether you're learning about DIGIPIN for the first time, running a business, or just want answers fast.
For citizens
Find your own DIGIPIN, share it on WhatsApp, and use it for deliveries and government services.
For businesses
How ecommerce, logistics, food delivery, and real estate teams can use DIGIPIN to cut failed deliveries.
How it works
The DIGIPIN algorithm in plain English — what the 10 characters mean, the grid, the math, the trade-offs.
Quick answers
The questions everyone asks first.
What does DIGIPIN stand for?
DIGIPIN stands for Digital Postal Index Number. It's a 10-character alphanumeric code introduced by the Department of Posts (India Post) that uniquely identifies any 4 m × 4 m square of land in India.
How is DIGIPIN different from a PIN code?
A PIN code identifies a postal area shared by thousands of homes. A DIGIPIN identifies a tiny 4 m × 4 m square — small enough to be almost unique to a single building or part of one. They work together, not against each other.
Is DIGIPIN free to use?
Yes. DIGIPIN is an open standard published by India Post and IIT Hyderabad. Anyone can generate, share, or build software with it without paying licensing fees.
Is DIGIPIN mandatory?
No. DIGIPIN is an additional address layer designed to coexist with regular postal addresses. You can use it alongside your normal address whenever it's useful.
Start here
Our five most important guides — written for people, not engineers.
What is DIGIPIN? The complete guide.
The full story of India's digital address system — what it is, who made it, why it exists, and how to use it.
How toHow to find your DIGIPIN in 30 seconds
Step-by-step walkthroughs using your phone's location, India Post's official tool, and printed maps.
CompareDIGIPIN vs PIN code: which one to use?
They aren't replacements. Here's exactly when each one matters, with real-world examples.
ExplainedThe DIGIPIN algorithm, explained
How the 10 characters are generated, why the grid is 4 m on each side, and what those letters mean.
BusinessDIGIPIN for businesses: a handbook
How ecommerce, logistics, real estate, and food delivery teams can use DIGIPIN to reduce failed deliveries.
ReferenceDIGIPIN glossary
Every DIGIPIN-adjacent term defined in one place — from "geocode" to "last-mile delivery".
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