WP CLDR

This plugin gives WordPress developers easy access to localized country, region, language, currency, time zone, and calendar info from the Unicode Common Locale Data Repository.

With the plugin active, WordPress developers can access the following for over 100 WordPress locales:

• Names for countries (and ISO 3166 country codes).
• Names for regions (and UN M.49 region codes, plus countries included in each region).
• Names for languages (and ISO 639 language codes).
• Names and symbols for currencies (and ISO 4317 currency codes).
• Names for time zone example cities (and IANA time zone IDs).
• Calendar information including the first day of the week in different countries.
• Country information including telephone codes, most spoken languages, currency, and population.

More information in the detailed API documentation.

CLDR is a library of localization data coordinated by Unicode. It emphasizes common, everyday usage and is available in over 700 language-region locales. It is updated every six months and used by all major software systems. CLDR data is licensed under Unicode’s data files and software license which is on the list of approved GPLv2 compatible licenses.

Follow along with or contribute to the development of this plugin at https://github.com/Automattic/wp-cldr.