List of EU member states and official languages
List of EU member states and official languages

The following Dispute Resolution practice note provides comprehensive and up to date legal information covering:

  • List of EU member states and official languages
  • Candidate countries for EU membership

Membership of the European Union has steadily grown since its founding members formed the European Coal and Steel Community in 1952, followed by the establishment of the European Economic Community and the European Atomic Energy Community in 1958.

The following is a list of the 27 EU Member States, their official language/s and the date they each joined. Note that the United Kingdom (comprising England, Wales, Scotland and Northern Ireland plus also deemed to include Gibraltar) joined in 1973 and left the EU on 31 January 2020.

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