POST*CODE® Format

Different countries have diverse approaches to defining their postcode systems, including their placement within addresses, mandatory usage, and alphanumeric composition. Understanding these details is crucial for correct address processing.

The Universal Postal Union (UPU) serves as a centralized repository for postcode information sourced directly from member countries' postal administrations. We provide comprehensive descriptions of postcode formats, facilitating accessibility for international organizations, IT developers, software and logistic companies and the general public.

Below, you'll find a table listing postcode formats per country, indicating whether they are mandatory, which countries utilize postcodes, and their composition. Information is presented in two formats: regular expression and human-readable. Additionally, this information is accessible via our POST*CODE API service, which you can consult at: https://www.test.address.post/postcodeapi/user/login

We continuously update this data to reflect new postcodes worldwide. If you have any doubts or find any information unclear, please contact us by sending a message.