Urban populations and places
The urban world is a heterogeneous place. Although in geographical terms the population of the globe is more urban than rural, levels of contemporary urban development vary widely. Important and highly significant differences exist within and between regions and countries in the size and proportions of their populations that live in urban places. The ways in which the population is distributed according to the number and size of cities also contrasts markedly from place to place. Such differences are the products of the many complex processes that are responsible for the contemporary pattern of global urban development. They have important implications for the ways in which the world integrates and functions as an urban system.