Cities are notable for their large size, populous community, modern facilities plus large economic activities but growth of city’s population causes many challenges which generate a need of effective management to keep new opportunities opened for economic development and easy availability of basic services like health care and education in accordance with population. Overcrowding may lead to problem related to transportation and sanitation which make thing more worse for which authorities try to have equal dispersion of population for providing public services in best way. The continuing migration from rural to cities will bring profound changes to size and distribution of the world’s population. About 54% people of the world living in urban areas in 2014. In 1950, cities were occupied by 30% people of the world. Based on current projection it is estimated that 66% people of our planet will reside in cities in 2050. Nearly 90% of such growth is concentrated in Asia and Africa. Approx, one in eight reside in the 28 populous-cities of 10 million population or more. In past, world’s largest metropolitan areas were only found in the more developed countries but now they are concentrated in the Asia and Africa and number of largest and populous cities has nearly tripled since 1990. India, China and Nigeria together are anticipated to account for 37% of the expansion of the urban population between 2014 and 2050. At the same time, most cities of low-fertility countries of Asia and Europe are experiencing huge decline as a result of economic contraction and natural calamities. The 2014 revision of the World Urbanization Prospects provides complete information about population growth and trends in top populous cities of the world, Statistics on them are important for making successful planning for equitable and sustainable development of urban areas.
Top 20 Largest Cities of the world by population
Trends of largest cities of the world
Tokyo is the world’s largest city with 38 million residents. By 2020, City’s population is estimated to begin to decline, although it will remain the world’s most populous in 2030. The world’s 45th largest city by area has Metropolis area of 2,187.66 km2. The country’s most densely populated covers 0.6% of the japan with a density of 6,029/km2.
Source: United Nations, Department of Economic and Social Affairs, Population Division (2014).
World Urbanization Prospects: The 2014 Revision
World Urbanization Prospects: The 2014 Revision
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