The World's Largest Cities in 2026 by Population
Every year on July 11, World Population Day draws attention to the demographic trends reshaping societies around the globe. In 2026, the United Nations marks the occasion under the theme, "Realizing the Hopes and Aspirations of Young People – Today and for the Future," highlighting how young people's decisions about education, employment, housing, relationships, and family life are increasingly influenced by the cities they inhabit. Drawing on Lives, Choices and Futures, a global survey of more than 108,000 young adults across 73 countries, this year's campaign underscores the close relationship between demographic change and the social, economic, and spatial conditions of cities.
