European Union (2017) size comparison
4,422,773 km2 / 1,707,190 mile2
The European Union (EU) is a political and economic union of 27 member states that are located primarily in Europe. Its members have a combined area of 4,233,255.3 km2 (1,634,469.0 sq mi) and an estimated total population of about 447 million.
The United Kingdom was the first member state to leave the EU on 31 January 2020, and before this, three territories of member states had left the EU or its forerunners.