EU Eurozone (20) EU states obliged to join the Eurozone (6) EU states with an opt-out on Eurozone participation (1) States outside the EU with issuing rights (4) Other non-EU users of euro (2) The Eurozone (also called Euro area or Euroland) is the set of countries in the European Union which have adopted the Euro (€) currency. The European Central Bank is responsible for managing the supply of money within the eurozone and political decisions are taken by the "euro group", which is a meeting of the politicians from each euro country in charge of that country's economy.