Geography of the European Union Largest cities Largest cities

| 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 |