Finding the postal codes you need for your post is as simple as few clicks. First select your country of choice to be taken to a list of the administrative divisions of that country. Then select the area where you are trying to send your letter for a list of the available zip codes for that area.
Not sure of the country or the administrative division to choose? Or your country/region is missing in the list? Try entering the address into the search at the top of the page to lookup the right code to use.