On 1 January 2011, 41% of the population of the EU27 lived in urban regions, 35% in intermediate regions and 23% in rural regions. These figures, published by Eurostat, the statistical office of the European Union, are based on a new urban/rural typology developed by the European Commission. This classification is carried out on NUTS 3 regions. The regions are classified as rural, intermediate or urban based on an analysis of population density and total population. A second dataset provides detailed statistics on the EU's main metropolitan areas, also based on NUTS 3 regions.