Enter a postcode
Type a full UK postcode such as SW1A 1AA.
Enter a UK postcode to find useful location, local authority and area information.
Source: Postcodes.io (opens in a new tab)Type a full UK postcode such as SW1A 1AA.
The lookup service resolves the postcode against its public postcode dataset.
See location, local authority, ward, constituency and coordinates where available.
Available fields can include country, region, local authority, ward, parliamentary constituency and coordinates.
This checker expects a full UK postcode so it can return precise administrative information. Partial postcode districts are not supported.
The live lookup is provided through the Postcodes.io postcode service, which publishes UK postcode and administrative geography data.
The external postcode dataset is maintained independently. The site does not claim real-time boundary updates.
Calculation rules or data are based on Postcodes.io (opens in a new tab) where applicable. Always check the linked official guidance for unusual or high-stakes circumstances.