Theory:

  • Currently, more than \(50\)% of the world’s population lives in urban areas.
  • It is expected to have about\(70\)% of the world’s population live in urban areas by \(2050\).
  • Over\( 3/5th \)or 60% of the land projected to become urban by \(2030 \)is yet to be built.
  • Africa is likely to reach a 50% urbanisation rate only in \(2035\).
  • In \(1970\), Tokyo and New York were the only megacities. But today, there are 23 megacities, 13 in Asia, 4 in Latin America, and 2 each in Africa, Europe and Northern America.
  • Megacities account for a small but increasing proportion of the world urban population: 9.9% in \(2011 \)and 13.6% in \(2025\).
  • Over half (50%) of the urban population lives and will continue to live in small urban centres with a population of less than half a million.
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  • In 2011, Northern America experienced the highest level of urbanisation (\(82.2\) per cent), followed by Latin America and the Caribbean (\(79.1 \)per cent).
  • Africa and Asia are expected to have the highest rate of urbanisation in the coming decades.
  • The urban population is likely to treble in Africa and increase by 1.7 times in Asia over the next four decades.
  • Between 2018 and 2050, just 3 countries – India, China and Nigeria – together are expected to account for 35% of the growth in the urban population of the world.
Reference:
https://population.un.org/wup/Publications/Files/WUP2018-KeyFacts.pdf
https://www.un.org/en/ecosoc/integration/pdf/fact_sheet.pdf