![]() ![]() But by 2020, a city would need to be almost 50 times this size to make the top 10 cut. A city with the population of Turin (at just 66,000 inhabitants) would have made the list and a city with 400,000 inhabitants would have been in the ten largest. In 1800, London topped the largest 100 list with 1.1 million inhabitants. To make the top ten, a city would need 19.2 million. Tokyo is the largest with 37.4 million inhabitants to get into the top 100 list, a city would need to match the population of Ürümqi in China with 4.4 million. The surging scale of large citiesīy 2020, the world’s 100 largest cities have 974 million inhabitants more than a fifth of the global urban population. The blog also looks at how their distribution across nations and regions has changed from 1800 to 2020 – with projections up to 2035. The statistics for 2020 are projections as the most recent census data for most nations are from 2009 to 2012. In this opening blog, we look at the world’s 100 largest cities and how their scale has changed over the last 220 years. Almost all the population data in this blog is from the UN Population Division's World Urbanization Prospects 2018. The updated edition will be published later this year. These blogs reflect a planned new edition of David Satterthwaite's landmark 2007 working paper, ' The Transition to a Predominantly Urban World and its Underpinnings'.
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