Largest Cities, Worldwide Millions 1950 2000 2015 Source: United Nations, World Urbanization Prospects: The 2003 Revision (medium scenario), 2004.
Notes on Largest Cities, Worldwide The largest cities in the world are growing rapidly, and they are shifting from the more developed regions to the less developed regions. In 1950 the three largest cities were in more developed countries; by 2000, only Tokyo remained in the top three. In 1950, New York was the largest city in the world, with a population of about 12 million. By 2015, the largest city worldwide is projected to be Tokyo, with triple this population size: 36 million.