fast-facts_1 For the first time in history, more than half of the world’s people live in cities.

 

Nearly 2,000,000,000 new urban residents are expected in the next 20 years.

fast-facts_2 of global GDP is created by cities.
fast-facts_3 The proportion of the urban population in developing countries living in slums.

 

The number of slum dwellers is estimated to grow by nearly 500,000,000 by 2020.
fast-facts_4

Three largest cities in the world ranked by population

Tokyo, Japan
33,200,000
New York City, USA
17,800,000
 São Paulo, Brazil
17,700,000

 

Sources: citymayors.com, UN-HABITAT State of the World’s Cities Report 2010/2011, The World Bank’s World Development Report 2009.