DigiPIN: your address as a 10-character code - how to find yours
Every roughly four-metre square of India now has a short digital code. DigiPIN, the Department of Posts' open-source addressing grid developed with IIT Hyderabad and ISRO's National Remote Sensing Centre, assigns a 10-character code like C4P-8K6-3M4M to each location, calculated from its latitude and longitude. Anyone can find the DigiPIN of their home or shop on India Post's free Know Your DigiPIN web app - we tested it on 28 October 2026.
Quick facts
- What it is: per India Post's DigiPIN page, DigiPIN is an open-source national-level addressing grid - the foundation layer of a Digital Public Infrastructure for standardised, geo-coded addresses, built by the Department of Posts with IIT Hyderabad and NRSC (ISRO). The goal is simplified addressing for delivery of public and private services, or "Address as a Service".
- How it works: the official technical document says the grid divides India's territory into uniform units of about 4 metres by 4 metres. Each unit gets a unique 10-digit alphanumeric code derived from its latitude and longitude, using a set of 16 symbols - the letters F, C, J, K, L, M, P, T and the digits 2 to 9.
- How it is written: for people, the code is grouped with hyphens, like C4P-8K6-3M4M. The project's documentation says systems and APIs should always use the continuous 10 characters without hyphens or spaces.
- It marks a place, not a person: a DigiPIN identifies a 4m square of land. It contains no name, house number or personal details - anyone can compute or look up the code for any coordinates, and it works offline as a location reference.
- Open source: the reference implementation is public on GitHub (Apache-2.0 licence), so apps and services can build DigiPIN support without permission or fees.
- Our test: on the Know Your DigiPIN app we entered the official sample code C4P-8K6-3M4M; the map jumped to that exact grid cell and labelled it (screenshot below). The app asks for your device's location to show your own DigiPIN - it states the location is used only to find DigiPINs for your area - and also offers search by location name or by a known code.
How to find your DigiPIN
- Open the Know Your DigiPIN app - dac.indiapost.gov.in/mydigipin - on your phone or computer.
- Tap I Consent and allow location access when the browser asks; the app centres the map on you and shows the DigiPIN for your spot. Stand at your gate for the most useful code.
- No location access? Use Search Location to look up a place, or Search DIGIPIN to check a code someone gave you - the search accepts the 16 allowed characters shown under the box.
- Note the code and share it with delivery services or anyone who needs to find the exact spot, alongside your normal address.
A DigiPIN complements your postal address rather than replacing it: the PIN code routes mail to a delivery office, while a DigiPIN pinpoints the last few metres. India Post also documents DHRUVA, a related layer of its digital address ecosystem, on the same page.
Sources checked 28 October 2026:
- India Post: DigiPIN page (DPI initiative, partners IIT Hyderabad and NRSC-ISRO, Address as a Service)
- DigiPIN technical document (4m x 4m grid, 10-digit code, 16 symbols)
- Know Your DIGIPIN web app (tested)
- DigiPIN open-source repository (Apache-2.0, format rules, sample codes)
Explainer by AiCoN - not a government publication. Details can change; check indiapost.gov.in/digipin.