Conurbation

A conurbation is a region comprising a number of metropolises, cities, large towns, and other urban areas that, through population growth and physical expansion, have merged to form one continuous urban or industrially developed area. In most cases, a conurbation is a polycentric urbanised area, in which transportation has developed to link areas to create a single urban labour market or travel to work area.[1]

A map of the large conurbation area of Helsinki (in yellow) in Uusimaa, Finland

Patrick Geddes coined the term in his book Cities In Evolution (1915). He drew attention to the ability of the then new technology of electric power and motorised transport to allow cities to spread and agglomerate together, and gave as examples "Midlandton" in England, the Ruhr in Germany, Randstad in the Netherlands, and Northeastern Seaboard in the United States.[2]

The term as described is used in Britain, whereas in the United States each polycentric "metropolitan area" may have its own common designation, such as San Francisco Bay Area or the Dallas–Fort Worth metroplex. Internationally, the term "urban agglomeration" is often used to convey a similar meaning to "conurbation".[3][4] A conurbation should also be contrasted with a megalopolis, where the urban areas are close but not physically contiguous, and where the merging of labour markets has not yet developed.


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