Largest Cities of the World - (by metro population)
NOTE: Numbers shown include population within the recognized metro area of the city, and they also include people
living in the immediate surrounding area outside of the established border of the city, (the immediate suburbs)

NOTE that some population numbers shown are accumulated at-best estimates, as consistent (2012 census) information
is not yet unavailable in some parts of Africa and Asia.
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All countries of the world - by population
Capital cities of the world - with population

Sources: Varied international public domain sites, the U.S. Census Bureau and Times Atlas of the World