The United Nations publish every two years a report on the degree of urbanization of the planet, which also includes the urban- rural population share and the evolution of the size of cities by ranks.

This edition quantifies the trend that has already been verified in recent years to a strong growth of megacities in the global south, but it also confirms that the cities under 500.000 are still extremely relevant, housing almost half the current world’s urban population, and are set to still weight around 45% in 2030.