what is the biggest city in the world

## Tokyo, Japan Tokyo is the world's largest city by urban population, with the greater metropolitan area home to approximately **37–38 million people**. It serves as Japan's capital and economic hub, encompassing a vast network of interconnected cities, towns, and districts. The city is known for its extraordinary density, efficient public transportation, and blend of ultramodern and traditional culture. It is one of the world's leading financial centers and a major global influence in technology, fashion, and cuisine. Other cities that rank near the top in population include **Delhi, India** (rapidly approaching or rivaling Tokyo in some estimates), **Shanghai, China**, **São Paulo, Brazil**, and **Mexico City, Mexico**. Rankings can vary depending on whether you measure the city proper, urban area, or metropolitan region. Delhi is notable because its population growth rate is much faster than Tokyo's, and some projections suggest it may surpass Tokyo as the most populous urban area in the coming years.