As of January 1, 2019, 21.8 million citizens of a non-EU country lived in one of the 27 EU member states, which makes up almost 5% of the EU population.
In addition, as of January 1, 2019, 13.3 million people with the citizenship of another EU member state lived in one of the EU member states, which makes up almost 3% of the EU population.
The highest percentage of non-citizens live in Luxembourg – 47% of the total population of the country.
A high proportion of foreign citizens (10% or more of the resident population) is also registered in Cyprus, Malta, Austria, Estonia, Latvia, Ireland, Belgium, Germany and Spain.
The lowest percentage of non-citizens – less than 1% of the population – live in Poland and Romania.
According to statistics, most non-citizens are citizens of non-EU countries.