The term population density is a measure of how many people live in a given area. Population density as used here is the number of inhabitants per hectare (1 hectare is an area about 86 yards on a side. 1 hectare = 2.47 acres, or 1 acre = 0.4047 hectare. 640 acres = 1 sq. mile). The population density of Berlin’s entire urban area is 37 people/hectare (p/ha). This figure is in the middle range for German and European cities. Hamburg has an average of 39 % fewer people per hectare. In the inner city of Paris the population density on the same area is almost twice as high (cf. Fig. 1).
Population Density 2012
Image: Umweltatlas Berlin
h6. Data status: Berlin / Munich / London: 31.12.2010; Hamburg / Frankfurt: 31.12.2009; Paris: Inner City: 01.01.2008, Unité urbaine: 01.01.2007; Warsaw: 30.06.2010.
In Paris the inner city and the municipal border of the city area are overlaying; a reference value to the urban areas of the other cities is the goegraphical unit “Unité urbaine” with 10,197,678 inhabitants and 2,723.03 km² (37.5 p/ha).
Image: Umweltatlas Berlin
h6. Population figures for inner city boroughs existed only as a total sum for the years 1871 and 1900. No population data for the eastern city boroughs was available between 1949 and 1975. This prevented a calculation of population density for inner city boroughs for these years.