What is postcodes.io?

Postcodes.io is a free, open-source UK postcode API. It uses data from Ordnance Survey, National Statistics, and other government sources under the Open Government Licence. No API key is required for basic lookups.

Does it work for partial postcodes?

You can enter a full postcode for precise results. The autocomplete feature will suggest valid postcodes as you type based on a partial outward code.

What are "nearby postcodes"?

The tool shows the nearest postcodes to the one you looked up, using the postcodes.io nearest endpoint. This can be useful for finding neighbouring areas or expanding a search radius.

UK Postcode Finder - Free Online Area Lookup Tool

How to Use uk-postcode-finder

Type a UK postcode - full or partial - into the input field.
Adjust any available options shown - the output updates as you type.
The result updates instantly - no submit button required for most operations.
Click Copy or Download to take the output to your next step.

UK Postcode Finder allows you to quickly retrieve detailed location data for any valid UK postcode. This free online area lookup tool provides instant access to administrative data such as wards, districts, and parliamentary constituencies. Simply enter a postcode to see its associated geographic coordinates and regional classification without any complex navigation.

Comprehensive Geographic Information Search

This postcode location search utility is essential for developers and logistical planners who need precise latitude and longitude data for UK addresses. The tool also includes an autocomplete feature to help you find valid outward codes and displays nearby postcodes within a 1km radius. All lookups are processed securely through the postcodes.io API, ensuring you get the most up-to-date Ordnance Survey and National Statistics information.

Detailed area lookup for ward, county, and region data
Precise latitude and longitude coordinates for mapping
Smart autocomplete for quick postcode entry
Identification of nearby postcodes and neighboring districts
Direct links to view locations on Google Maps or OpenStreetMap

Frequently Asked Questions

What does uk-postcode-finder do?

uk-postcode-finder look up any uk postcode - area, ward, county, lat/lng, country.

What input does uk-postcode-finder accept?

Paste text directly into the input field, or type your data. Most operations handle Unicode, special characters, and multi-line inputs without issue.

How large an input can I process?

There is no hard limit imposed by this tool. Very large inputs (multi-MB text) process within your browser's available memory. For files larger than 50 MB, a command-line tool may be faster.

Can I download the output?

Yes - every output panel includes a Copy to Clipboard button and a Download as file option. Outputs are saved as plain text or the appropriate file format for the operation.

Whether you are verifying a delivery address or building a location-aware app, this free online UK postcode finder provides instant and reliable results.

UK Postcode Finder online

Look up any UK postcode - area, ward, county, lat/lng, country