World Urbanization Prospects The 2014 Revision

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WUPIntroduction
In today’s increasingly global and interconnected world, over half of the world’s population (54 per cent) lives in urban areas although there is still substantial variability in the levels of urbanization across countries. The coming decades will bring further profound changes to the size and spatial distribution of the global population. The continuing urbanization and overall growth of the world’s population is projected to add 2.5 billion people to the urban population by 2050, with nearly 90 per cent of the increase concentrated in Asia and Africa. At the same time, the proportion of the world’s population living in urban areas is expected to increase, reaching 66 per cent by 2050.
There is great diversity in the characteristics of the world’s urban environs: close to half of urban dwellers reside in relatively small settlements of less than 500,000 inhabitants, while nearly one in eight live in the 28 mega-cities of 10 million inhabitants or more. The number of mega-cities has nearly tripled since 1990; and by 2030, 41 urban agglomerations are projected to house at least 10 million inhabitants each. Whereas several decades ago most of the world’s largest urban agglomerations were found in the more developed regions, today’s large cities are concentrated in the global South, and the fastest-growing agglomerations are mediumsized cities and cities with 500,000 to 1 million inhabitants located in Asia and Africa.

Read more (PDF)http://esa.un.org/WUP2014-Highlights.pdf

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