Looking up a postcode

The postcode is the fundamental, essential element of an address. It is a key component of a postal addressing system.

A unique, universal identifier, it unambiguously identifies the addressee's locality and assists in the transmission and manual or automated sorting of mail items.

At present, around 130 countries use postcodes as part of their addressing systems.

To search for a postcode, consult the list of UPU designated operators' websites in the menu to the right.

To validate an international address, consult the websites of partners.