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The EU has 27 member countries. Croatia was the last to join, in 2013, and the United Kingdom left on 31 January 2020.
6 + 2 + 3 + 3 + 10 + 3: six founders, then the enlargements of 1973, the 1980s, 1995, 2004 and 2007–2013.
Original signatories of the Treaty of Rome / 1951 ECSC.
Denmark and Ireland joined in 1973, with the United Kingdom.
Southern European accessions post-democratisation.
Post-Cold-War neutral states joining after EEA/EFTA.
Ten mostly ex-communist states joined together, 1 May 2004.
Bulgaria and Romania in 2007; Croatia in 2013, the most recent member.
Can you name them all?
Test yourselfThe EU has 27 member countries. Croatia was the last to join, in 2013, and the United Kingdom left on 31 January 2020.
Belgium, France, Germany, Italy, Luxembourg, Netherlands, Denmark, Ireland, Greece, Spain, Portugal, Austria, Finland, Sweden, Cyprus, Czechia, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia, Bulgaria, Romania and Croatia.
6 + 2 + 3 + 3 + 10 + 3: six founders, then the enlargements of 1973, the 1980s, 1995, 2004 and 2007–2013.
No. The United Kingdom left the EU on 31 January 2020.
Each name checked against at least two sources, one of them European Union official country profiles, on 28 September 2026. Next review by 28 September 2027.
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