Welsh Postcodes

Welsh Postcodes  

The Welsh Postcodes file contains all Welsh Postcodes including the last two digits of the postcode (Postman's Walk - example CF1 7EB).

As approved distributors and value added resellers, we have created this subset data file using Royal Mail and Ordnance Survey source files and have simplified their RAW data to such an extent that we are able to offer sub sets of their files cheaper than if your ordered direct.

The file will be supplied to you under a Royal Mail and or Ordnance Survey licence for 12 months unlimited use. During this time you will receive quarterly updates.

Welsh Postcodes Applications

The Welsh Postcodes data is ideal for validating Postcode relating information to ensure Postcodes are current and accurate.


    • Postcode - e.g. CF76 1PH
    • Postcode Sector - e.g. CF76 1
    • Postcode District - e.g. CF76
    • Postcode Area - e.g. CF


The Welsh Postcodes data covers Wales only.

Supply Format

The data is supplied as a Comma Separated Variable (CSV) delimited text file using double quotes by default. This field format will open very easily using almost any software application including but not limited to Excel, Word, Notepad, Access, SQL etc.  Due to the size of the file, older versions of Excel may not be an option as Excel limits any file size to around 65,000 rows / records.


The Welsh Postcodes data is by default emailed at the time of order using a secure download link delivery method.  If you require the data supplied in another format then we will be more than happy to accommodate you where reasonable to do so at no extra cost.


The Welsh Postcodes list is licensed annually for each user that has access to it.

Contains Ordnance Survey data © Crown copyright and database right 2012. Contains Royal Mail data © Royal Mail copyright and database right 2012.


The file is updated every three months and free updates will be made available to you so long as your licence remains current.


Other Countries



Northern Ireland


Data Partnership - Royal Mail Postcode Address File Telephone Preference Service Mailing Preference Service Institute of Direct Marketing