Enter a full postcode
Type a valid complete UK postcode.
Postcodes & Places
UK Region & County Lookup by Postcode
Enter a full UK postcode to see its country, region and available administrative county and district information.
Source: Postcodes.io (opens in a new tab)Loading calculator…
HOW IT WORKS
How the UK Region & County Lookup by Postcode works
Resolve administrative geography
The postcode record is matched against open administrative geography fields.
View region and county information
See country, region, administrative county, district and ward where those fields exist.
COMMON QUESTIONS
Frequently asked questions
Why is county sometimes blank?
Modern UK administrative geography does not use an administrative county field everywhere, so some valid postcodes legitimately have no value for that field.
Is a ceremonial county the same as an administrative county?
No. This tool shows the administrative fields exposed by the postcode data source and does not claim they are ceremonial counties.
Can I use a partial postcode?
No. A full postcode is required.
Where does the geography come from?
The lookup uses Postcodes.io open postcode geography data.
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Post Town / Place Lookup
Find the built-up area or administrative place available for a UK postcode.
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UK Area Information Checker
See a broad postcode-area summary including region, council, ward, constituency, place and coordinates.
Source information
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.