Rhine-Ruhr metropolitan region

Rhine-Ruhr metropolitan region Metropolregion Rhein-Ruhr
From top, left to right: Aerial view of Cologne Aerial view of Düsseldorf, the state capital of North Rhine-Westphalia Dortmund Essen
The Rhine-Ruhr metropolitan region of Germany
Coordinates: 51°27′N 6°53′E / 51.450°N 6.883°E / 51.450; 6.883
Country	Germany
State	North Rhine-Westphalia
Largest cities	Cologne Düsseldorf Dortmund Essen Duisburg Bochum Wuppertal Bonn
Area
• Metro	7,110 km2 (2,750 sq mi)
Highest elevation	494 m (1,621 ft)
Lowest elevation	20 m (70 ft)
Population  (2021)
• Metro	11,300,000
• Metro density	1,600/km2 (4,100/sq mi)
GDP [1]
• Metro	€536.431 billion (2021)
Time zone	UTC+1 (CET)

The Rhine-Ruhr metropolitan region (German: Metropolregion Rhein-Ruhr) is the largest metropolitan region in Germany, with over ten million inhabitants.^[2] A polycentric conurbation with several major urban concentrations, the region covers an area of 7,110 square kilometres (2,750 sq mi), entirely within the federal state of North Rhine-Westphalia. The Rhine-Ruhr metropolitan region spreads from the Ruhr area (Dortmund-Bochum-Essen-Duisburg) in the north to the urban areas of the cities of Mönchengladbach, Düsseldorf (the state capital), Wuppertal, Leverkusen, Cologne (the region's largest and Germany's fourth largest city), and Bonn in the south. The location of the Rhine-Ruhr at the heart of the European Blue Banana makes it well connected to other major European cities and metropolitan areas such as the Randstad, the Flemish Diamond and the Frankfurt Rhine Main Region.

The metropolitan area is named after the Rhine and Ruhr rivers, which are the region's defining geographical features and historically its economic backbone.