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Global urban population reaches 45% of 8.2 billion, with 33 megacities and rapid growth in small and medium cities, especially in Africa and Asia.
As of 2025, 45% of the world’s 8.2 billion people live in cities, up from 20% in 1950, according to a revised UN report using a standardized urban definition.
The number of megacities—urban areas with 10 million or more residents—has grown to 33, with 19 in Asia; Jakarta is the most populous, with nearly 42 million.
While megacities are expanding, most people live in small and medium-sized cities, which are growing faster, especially in Africa and Asia.
The global number of cities has more than doubled since 1975 and could exceed 15,000 by 2050.
The report introduces a new geospatial method for consistent urban-rural classification, aiding climate and development planning.
La población urbana global alcanza el 45% de 8.200 millones, con 33 megaciudades y un rápido crecimiento en ciudades pequeñas y medianas, especialmente en África y Asia.