This is a free API. Postcodes.io is aimed at developers who want a resource to lookup and (reverse) geocode UK Postcodes.
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|ONS Postcode Directory||OS Open Names|
|Release Date||February 2017||January 2017|
Beyond the dates listed above, please be aware that the real world dataset may change. Existing postcodes and places may be amended or discontinued. This information will not be captured until the next available update.
Postcodes.io is available under the MIT License
Great Britain postcode data may be used under the terms of the OS OpenData licence.
Northern Ireland postcode data (i.e. beginning "BT") may be used under the terms of the ONSPD licence. Non-commercial use is free. Commercial use requires a license from NI Land & Property Services
Contains Ordnance Survey data © Crown copyright and database right 2017
Contains Royal Mail data © Royal Mail copyright and database right 2017
Contains National Statistics data © Crown copyright and database right 2017
Postcode.io, a laudable company in California providing technology applications and services to local governments.