We maintain a large number of lookup files which relate one or more geography to another. You can download these lookup files free of charge from the Open Geography portal.

You can find more information on the geographies in the download files and in the ‘Beginner's Guide to UK Geography’ section of the website.

Product details

We provide lookup files in CSV format, with accompanying metadata in XML format, product specification document and any other relevant documentation. CSV files can be read in MS Excel format and all common database applications; XML files can be displayed in any internet browser.

All these products contain the nine-character GSS codes. For further information, please see the Code History Database.

Please note that Northern Ireland has not adopted the nine-character GSS codes for all its geographies at present, so information will still be in the current-style coding with the nine character code field blank.


You can download the files free of charge from the Open Geography portal.

Only the latest versions of files are on the portal, but earlier versions may be available. Please contact us for details.