Top 10 most populous cities in the world
According to the United Nations World Urbanization Prospects (WUP) 2025, a “city” is defined as a contiguous built-up area with a population density of at least 1,500 inhabitants per square kilometer and a minimum population of 50,000. This definition is based on the Degree of Urbanization (DEGURBA) methodology, which enables consistent global comparisons. The following
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