World Cities

The global landscape is increasingly defined by its massive urban centers, with more than 190,000 cities documented in our comprehensive database. Recent data indicates that approximately 57% of the human population now lives in urban areas, a figure that continues to rise as rural residents migrate toward economic hubs. This shift represents more than 4.4 billion people living in environments ranging from small provincial towns to massive metropolitan regions. Tokyo remains the most populous metropolitan area on Earth, housing approximately 37 million residents across its sprawling footprint. Following closely is Delhi, which has grown to accommodate approximately 32 million people, and Shanghai, with a population of approximately 29 million. These three cities exemplify the rise of the megacity, a term used for urban areas that exceed 10 million inhabitants, of which there are now 33 worldwide. Density varies significantly across global regions depending on local geography and urban planning. While Tokyo covers a vast metropolitan area, Manila in the Philippines is the most densely packed, with more than 43,000 people per km² (111,370 people per sq mi) within its core limits. In contrast, many North American cities feature lower density but larger geographic footprints, such as the New York City tri-state area, which covers more than 12,093 km² (4,669 sq mi). Future urban growth is largely centered in Africa and Asia, where cities are expanding at unprecedented rates. Urban centers like Kinshasa in the Democratic Republic of the Congo and Lagos in Nigeria are projected to become some of the largest cities by the end of the century. These regions currently experience growth rates of nearly 4% per year, requiring massive investments in infrastructure, electricity, and clean water to support their expanding populations.