Tokyo, Japan: Tokyo is the largest city in the world by population, with over 37 million residents in its metropolitan area.
Delhi, India: Delhi is the second largest city, with a metropolitan population exceeding 31 million people.
Shanghai, China: Shanghai ranks third, with over 27 million people in its metropolitan area.
São Paulo, Brazil: São Paulo is the largest city in the Southern Hemisphere, with a metropolitan population of around 22 million.
Mexico City, Mexico: Mexico City is the fifth largest city, with a metropolitan population of over 21 million.
Cairo, Egypt: Cairo is the largest city in Africa and the Middle East, with a metropolitan population exceeding 20 million.
Mumbai, India: Mumbai, formerly known as Bombay, is India's financial and entertainment capital, with a metropolitan population of over 20 million.
Beijing, China: Beijing is the capital of China and has a metropolitan population of over 20 million people.