Katana VentraIP

Member state of the European Union

The European Union (EU) is a political and economic union of 27 member states that are party to the EU's founding treaties, and thereby subject to the privileges and obligations of membership. They have agreed by the treaties to share their own sovereignty through the institutions of the European Union in certain aspects of government. State governments must agree unanimously in the Council for the union to adopt some policies; for others, collective decisions are made by qualified majority voting. These obligations and sharing of sovereignty within the EU (sometimes referred to as supranational) make it unique among international organisations, as it has established its own legal order which by the provisions of the founding treaties is both legally binding and supreme on all the member states (after a landmark ruling of the ECJ in 1964). A founding principle of the union is subsidiarity, meaning that decisions are taken collectively if and only if they cannot realistically be taken individually.

Member state of the European Union

Member state

27 (as of 2024)

  • Republics (21)
  • Monarchies (6)

Smallest: Malta, 542,051
Largest: Germany, 84,358,845[1]

Smallest: Malta, 316 km2 (122 sq mi)
Largest: France, 638,475 km2 (246,517 sq mi)[2]

Each member country appoints to the European Commission a European commissioner. The commissioners do not represent their member state, but instead work collectively in the interests of all the member states within the EU.


In the 1950s, six core states founded the EU's predecessor European Communities (Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany). The remaining states have acceded in subsequent enlargements. To accede, a state must fulfil the economic and political requirements known as the Copenhagen criteria, which require a candidate to have a democratic government and free-market economy together with the corresponding freedoms and institutions, and respect for the rule of law. Enlargement of the Union is also contingent upon the consent of all existing members and the candidate's adoption of the existing body of EU law, known as the acquis communautaire.


The United Kingdom, which had acceded to the EU's predecessor in 1973, ceased to be an EU member state on 31 January 2020, in a political process known as Brexit. No other member state has withdrawn from the EU and none has been suspended, although some dependent territories or semi-autonomous areas have left.

EU15 includes the fifteen countries in the European Union from 1 January 1995 to 1 May 2004. The EU15 comprised Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Sweden, and United Kingdom. Eurostat still uses this expression.

[15]

EU19 includes the countries in the EU15 as well as the member countries of the OECD: Czech Republic, Hungary, Poland, and Slovak Republic.[16]

Central European

EU11 is used to refer to the Central, and Baltic European member states that joined in 2004, 2007 and 2013: in 2004 the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, the Slovak Republic, and Slovenia; in 2007 Bulgaria, Romania; and in 2013 Croatia.[17][18]

Southeastern Europe

EU27 means all the member states. It was originally used in this sense from 2007 until Croatia's accession in 2013, and during the from 2017 until the United Kingdom's withdrawal on 31 January 2020 it came to mean all members except the UK.

Brexit negotiations

EU28 meant all the member states from the accession of Croatia in 2013 to the withdrawal of the United Kingdom in 2020.

Abbreviations have been used as a shorthand way of grouping countries by their date of accession.


Additionally, other abbreviations have been used to refer to countries which had limited access to the EU labour market.[19]

Currencies of the European Union

Economy of the European Union

(1973–2013)

Enlargement of the European Union

(integration with the EFTA States)

European Economic Area

History of the European Union

Microstates and the European Union

Potential enlargement of the European Union

Special member state territories and the European Union

United Kingdom membership of the European Union

Withdrawal from the European Union

Member states of NATO

Europa

Member states