What Is a UK Postcode? Meaning, Format, and Examples
A UK postcode identifies delivery points for Royal Mail and underpins property records. Learn the format, examples, and how to use a postcode for stations and sold prices.
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What is a UK postcode?
A UK postcode is an alphanumeric code assigned by Royal Mail to a small set of addresses. It is not the same as a US ZIP code, though people sometimes search “what is a zip code UK” when they mean postcode. Typical examples: SW1A 1AA, EC1A 1BB, M1 1AE.
Write UK postcodes with a space before the final three characters. Our format guide covers every valid pattern and how outward versus inward codes work.
Useful links
- UK postcode format guideinternal
- Most popular postcodes UKinternal
- Map searchinternal
- Nearest stationsinternal
Frequently asked questions
What is a UK postcode?
It is Royal Mail’s alphanumeric code for groups of delivery addresses, used widely for property and local services.
What does a UK postcode look like?
Examples include SW1A 1AA, M1 1AA, and B33 8TH—letters and numbers with a space before the last three characters.
What is a zip code UK?
The UK uses postcodes, not ZIP codes. Enter a UK postcode the same way you would use a ZIP code in the US for addressing and location search.
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