Cologne Bonn Region
The Cologne Bonn Region (German: Region Köln/Bonn), also known as Cologne/Bonn Metropolitan Region (Metropolregion Köln/Bonn) is a metropolitan area in North Rhine-Westphalia, Germany, covering the cities of Cologne, Bonn and Leverkusen, as well as the districts of Rheinisch-Bergischer Kreis, Oberbergischer Kreis, Rhein-Erft-Kreis and Rhein-Sieg-Kreis. The region covers an area of 3,839 km² with 3,13 million inhabitants (population density 815/km²).
The Cologne/Bonn Region was established by local governments within the Cologne Government Region in 1992, to promote common policies in regional and urban planning, traffic management, environment and investment. Among the most prominent co-operative projects are the Cologne/Bonn Airport and the Verkehrsverbund Rhein-Sieg. The Cologne/Bonn region lies within the larger Rhine-Ruhr region, and forms a counterbalance to the more integrated Ruhr area, which also lies within the Rhine-Ruhr. Since 2008, studies have been undertaken to incorporate cities of the Lower Rhine region (most notably the city of Düsseldorf) into the alliance, in order to form a Rhineland metropolitan region (Metropolregion Rheinland).
Eurostat's Urban Audit splits the Cologne/Bonn region into two Larger Urban Zones (LUZ). These two Urban Zones do not cover the district of Oberbergischer Kreis.
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