Geocoding API

Lookup coordinates and geo data for UK postcodes

Return longitude and latitude   Reverse lookup   Delivered as a web service

Geocoding for web forms and mobile apps

Longitude and latitude

Return the coordinates and geodata for postcodes and addresses.

Reverse lookup

Translate a coordinate position from a map or a GPS to an address.

Quick setup

Install on a website or app in the same way as you integrate Google Maps or PayPal.

Reliable source data

Combines the very latest data from suppliers like Royal Mail, OS and ONS.

Payment models

Pay for lookups in advance and use optional auto top-up, or pay monthly or yearly.


Supports HTTPS to ensure your lookups are securely encrypted from end to end.

Try our geocoding demo

See how it works with a UK postcode

A simple API for developers

Sign up for an API key and get free lookups to try

Cross platform UK geocoding using the PostCoder Web API

Easy to integrate examples
Secure HTTPS requests
Reporting tools and usage alerts
350ms real-world response time
Enterprise SLA available

API documentation
Get your API key

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