megacity

A megacity usually defined as a metropolitan area with a total population in excess of 10 million people. Some of definitions also set a minimum level for population density. Megacities can be distinguished from global cities by their rapid growth, new forms of spatial population density, and both formal and informal economies, as well as poverty, crime, and high levels of social fragmentation. A megacity can be a single metropolitan area or two or more metropolitan areas that converge. The terms conurbation,metropolis and metroplex are also applied to the latter.

Megacities are characterized by global connectedness and local disconnectedness. This can be viewed as one of the tensions brought about by the globalization of modern cities. There were 18 megacities in 2000 conurbations such as Tokyo, New York City, and Mexico City had populations in excess of 10 million inhabitants.Tokyo already has 35 million, which is greater than the entire population of Canada.The table below is the lists top 25 megacity in the world.

Rank Megacity Country Population Annual Growth 1Tokyo Japan33,800,0000.60%2Seoul South Korea23,900,0001.40%3Mexico City Mexico22,900,0002.00%4Delhi India22,400,0004.60%5Mumbai (Bombay) India22,300,0002.90%6New York City USA21,900,0000.30%7São Paulo Brazil21,000,0001.40%8Manila ^[20] Philippines19,200,0002.50%9Los Angeles USA18,000,0001.10%10Shanghai China17,900,0002.20%11Osaka Japan16,700,0000.15%12Kolkata India16,000,0002.00%13Karachi Pakistan15,700,0004.90%14Guangzhou China15,300,0004.00%15Jakarta Indonesia15,100,0002.00%16Cairo Egypt14,800,0002.60%17Buenos Aires Argentina14,100,0001.00%18Moscow Russia13,500,0000.20%19Beijing China13,200,0002.70%20Dhaka Bangladesh13,100,0004.10%21Istanbul Turkey12,500,0002.80%21Rio de Janeiro Brazil12,500,0001.00%21Tehran Iran12,500,0002.60%24London United Kingdom12,300,0000.70%25Lagos Nigeria11,400,0003.20%