LATEST POSTAL CODE WORLDWIDE Finding the postal codes you need for your post is as simple as a 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. A postal code (also known locally in various English-speaking countries throughout the world as a post code, postcode, ZIP Code or PIN) is a series of letters or digits or both, sometimes including spaces or punctuation, included in a postal address for the purpose of sorting mail.