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Berlin Environmental Atlas

06.06 Population Density (Edition 2009)

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Statistical Base

The Map of Population Density is based on the file of mandatorily registered residents who have stated Berlin to be their main place of residence. This file was current as of 31 December 2008 and is managed by the State Statistical Agency Berlin-Brandenburg (Amt für Statistik Berlin-Brandenburg) (Berlin is both a city and a German state, but in this case there is one agency for Berlin and its surrounding state of Brandenburg). This file contains, among other things, the total of inhabitants registered with the Resident Registration Agencies for all statistical blocks in Berlin which have at least one inhabitant. The file is updated every six months on the basis of registrations, cancellations, and transfers.
As an administration register, the register of residents can't completely satisfy the criteria of statistics. So, the abstract of the reference dates contains unavoidably some inaccuracies caused by removal, births or death cases for example. An improvement of the quality of all registers of residents in Germany is to be expected through the introduction of the uniform tax number.

For the here available map a special operation was arranged: all 376,000 address data of Berlin were attributed to the blocks or block segments of the use data base of the Information System Urban and Development (ISU). By these means it was possible to aggregate the inhabitants data not only to the level of the blocks but also to the segment blocks of the ISU and to reach the same detailed presentation of the population density as in the edition 2008.

For data protection reasons it is not allowed to publish the true data for all areas with less than 3 inhabitants. Thus an automatic procedure is used to make anonymous those blocks (normally 3 or more inhabitants are displayed in those cases).
The area types and size of individual blocks and block segments was taken from the land use data base of the Information System Urban and Development (ISU). Criteria used for differentiating various areas were construction and open space structure type, age and use (cf. Map 06.07, SenStadt 2008).

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