|ethnic_groups =|ethnic_groups_year =|denonym = European|government_type = |leader_title1 = Commission|leader_name1 = José Manuel Barroso |leader_title2 = Parliament|leader_name2 = Hans-Gert Pöttering |leader_title3 = Council|leader_name3 = Slovenia|leader_title4 = |leader_name4 = Janez Jan?a |sovereignty_type = Formation|sovereignty_note =|established_event1 = Treaty of Rome|established_date1 = 25 March 1957|established_event2 = Treaty of Maastricht|established_date2 = 7 February 1992|area_rank = 7th¹|area_magnitude = 1 E12|area_km2 = 4,324,782|area_sq_mi = 1,669,807 |percent_water = 3.08|population_estimate = 495,128,529|population_estimate_rank = 3rd¹|population_estimate_year = 2007|population_census =|population_census_year =|population_density_km2 = 114|population_density_sq_mi = 289 |population_density_rank = 69th¹|GDP_PPP