Number of member states of the EU 1957-2023

Total number of member states of the European Union from 1957 to 2023

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Release date

July 2023

Region

Europe, EU

Survey time period

1957 to 2023

Supplementary notes

*The 6 founding members of the European Economic Community (as it was then known) through the 1957 Treaty of Rome were: Belgium, France, Germany, Italy, Luxembourg, and the Netherlands.

**The 10 countries who joined the EU in 2004 were the 8 post-communist states in central & eastern Europe (sometimes referred to as the 'eastern enlargement' of the EU): Czechia, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, and Slovenia; as well as the two Mediterranean island states Cyprus and Malta.

The United Kingdom voted to leave the EU in 2016, however, this process was only completed in February 2020.

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Access all statistics starting from $2,388 USD yearly *

* For commercial use only

Basic Account

For single users
$0 USD
Always free
Access limited to Free Statistics. Premium Statistics are not included.
  • Free Statistics
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For single users
$199 USD
per month, billed annually 1
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For teams of up to 5 people
$959 USD
per month, billed annually 1
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1 All prices do not include sales tax. The account requires an annual contract and will renew after one year to the regular list price.

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