Set of information which, for a postal item, allows the unambiguous determination of an actual or potential delivery point, usually combined with the specification of an addressee and/or mailee. (Universal Postal Union 2006)
Note: The description of postal delivery points most often uses the common address com¬ponents like e.g. thoroughfare name and locator (address number etc.), in addition they can also include specific postal designations like post codes and P.O. box identifiers. Although these postal designators originally were intended solely for the use of the postal service, especially the post code has frequently been adopted and used for other purposes – as a generic place identifier.