My Postcode

Click the map to drop a marker and find the nearest postcode..

We think your postcode is

According to your browser which gave an accuracy of

It's quite possible that your browser couldn't quite work out where you are, especially if you're using a desktop computer.

If you want to add postcode detection to your application, check out the API link. It's free!

How does it work

Basically

It's pretty simple. Code-Point open is a set of CSV files that contain all the UK postcodes, and their location as OSGB co-ordinates. So for a given postcode, you could find out where in the UK that was.

I wanted to do the reverse of that, so that for a given location you can try to work out what your postcode is. That's why I built this API that will allow you to pass a lat/lon co-ordinate and get back the nearest postcode. This web app uses your browser's geo-location abilities to determine where you are and then calls the API to get a postcode.

Technically

All of the postcodes have been imported to a MongoDB database, along with their corresponding WGS84 lat/lon co-ordinate. Once in the database, we use Mongo's geo-spatial indexing to locate the nearest postcode to your location

Created by @mattwoberts