Geography of the European Union
Largest cities
Columns: City proper | Population City limits in millions | Density per km² | Urban area | Population Urban area in millions | Metro area | Population Metro area in millions
London, UK | 7.5 | 4761 | Paris, France | 10.1 | London, UK | 12–14 | Berlin , Germany | 3.4 | 3815 | London, UK | 8.5 | Paris, France | 11.7 | Madrid , Spain | 3.1 | 1985 | Madrid , Spain | 5.5 | Rhine-Ruhr , Germany | 10.2 | Rome , Italy | 2.7 | 5198 | Ruhr , Germany | 5.3 | Randstad , Netherlands | 7.0 | Paris , France | 2.2 | 24672 | Barcelona , Spain | 4.5 | Madrid , Spain | 5.8 | Bucharest , Romania | 1.9 | 9131 | Milan , Italy | 3.8 | Barcelona , Spain | 5.3 | Hamburg , Germany | 1.8 | 2310 | Berlin , Germany | 3.7 | Milan , Italy | 4.3 | Warsaw , Poland | 1.7 | 3258 | Rotterdam – The Hague , Netherlands | 3.3 | Berlin , Germany | 4.3 | Budapest , Hungary | 17 | 3570 | Athens , Greece | 3.2 | Frankfurt Rhine-Main , Germany | 4.1 | Vienna , Austria | 1.7 | 3931 | Naples , Italy | 2.9 | Athens , Greece | 3.9