Switzerland is not a member state of the European Union, the European Economic Area, or the euro area.

An excerpt from the article 45 facts about Switzerland

It is a founding member of the European Free Trade Association and participates in the Schengen Area and the European Single Market based on bilateral treaties. In 1963, Switzerland joined the Council of Europe. In 2002, it became a full member of the UN, leaving the Vatican as the last universally recognized state without full UN membership.