Its a structured combination of letters and numbers that identify a group of addresses, with the house number it uniquely identifies a house. My post code identifies a group of 5 houses for instance. The post office uses it to make delivery of mail more efficient. It can be read by machines which sort mail. You can look it up here
UK Post Office has a website for Post Codes
Same as US ZIP code and different area has different codes, for instance Buckingham Palace is SW1A 1AA and Glasgow Airport in Scotland is PA3 2SW
UK does not have a zip code. Nowhere outside of US has a zipcode, Zipcodes are a USA-only thing.
There are hundreds of thousands of UK postcodes
UK Post Office has a website for Post Codes
Same as US ZIP code and different area has different codes, for instance Buckingham Palace is SW1A 1AA and Glasgow Airport in Scotland is PA3 2SW
UK does not have a zip code. Nowhere outside of US has a zipcode, Zipcodes are a USA-only thing.
There are hundreds of thousands of UK postcodes