Address lookup API
Capture accurate addresses and improve user experience
Data refreshed daily Works internationally Delivered as a web service
UK and international address validation
Optimised to handle typos, misplaced characters and even out-dated postcodes.
Allow your customers and employees to lookup an address anywhere in the world.
Install on a website or app in the same way as you integrate Google Maps or PayPal.
Pay for lookups in advance and use optional auto top-up, or pay monthly or yearly.
Supports HTTPS to ensure the addresses you lookup are encrypted from end to end.
Try the demo
See how it works with UK addresses
Designed for everyone
Our example UI conforms to Government Digital Service (GDS) accessibility guidelines
Use PostCoder Web across your business
Checkout and registration forms
Use address lookup to help customers fill in their details more easily. Capture higher quality addresses from the start.
CRMs and office apps
Help your staff spend less time typing in addresses and more time concentrating on your customers and their needs.
Speed-up customer refunds and improve address accuracy by including postcode lookup in your returns procedure.
Improve usability on devices with smaller interfaces by using postcode lookup whenever you ask for an address.
A simple API for developers
Sign up for an API key and get free lookups to try
9,000 businesses already trust us
“2x faster checkout times - PostCoder Web has literally transformed our checkout process”
- Zak Edwards, Founder of Prezzybox
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