With around 5.2 million inhabitants and an area of 5,300 km², the Düsseldorf administrative district is the most densely populated and most populous in Germany, with 1,000 inhabitants per km². It is almost four times more densely populated than the entirety of the old German states. Nine states of the European Union and 11 of the 16 federal states of Germany have fewer inhabitants than the administrative district of Düsseldorf. There are 5 districts and 10 independent cities in the administrative district.