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UK Postcode Lookup & Address Finder

The fastest and most accurate way to retrieve UK addresses online, powered by our robust API

  • Try it Yourself

Maximum of 15 searches per day

Integrate postcode lookup on any website with our JavaScript plugin

Or use our Postcode JSON API directly

Why Ideal Postcodes?

Flexible Pricing

Flexible Pricing

Choose between a flexible range of price tiers and licences. No tie-ins, no commitments. Contact us to find a licence that works better for you, or try our API for free

Simple Integration

Simple Integration

Drop in autocomplete functionality on your web pages, CRM, POS tools & ERP systems. We offer free developer support and additional resources to help you get started


Easily Customisable

Style your postcode finder to suit your design. Feel free to reach out for assistance or view our templates


High Data Quality

Our data is updated daily using Royal Mail's PAF dataset. Get access to the UK's most accurate and reliable address database

Flexible Licensing

As Royal Mail Postcode Address File specialists we provide niche licensing options


Public Sector

Make full use of address data with cost-effective licensing for public sector organisations


Implement tools in your app or client projects. Register and monitor your client’s usage through modern and simple licensing options


Small charities can benefit from cost-effective plans to increase website donations, gift aid registration and to speed up in-person collection

Staff Usage

You can easily integrate our solutions to your internal data tools such as a CRM, Point of Sale system or custom application

Trusted by Many

We work with developers across small businesses and startups through to public and FTSE 100 organisations

Client Logos

Business Operators

We were drawn to the ease of use and simplicity together with excellent documentation. The support has been friendly, expert and timely.

Ceri Richmond
Managing Director, Core

The team was brilliant start to finish making integration and setup so easy! The ability to contact someone who is technical is just brilliant and makes such a refreshing change

Andrew Board
Managing Director, Screwsline

I’m happy with the service, it just ticks along nicely and is a better thought out and executed system than the previous one I used.

Mark Kowalczyk
Founder, Special Moment

Or call our Postcode API directly

Start searching postcodes in moments with our ready made libraries

const { Client } = require("@ideal-postcodes/core-node");

const client = new Client({ api_key: "iddqd" });

await client.lookupPostcode({ postcode: "EX5 1NA"});