The attainment of zero growth, in which the number of births in a population equals the number of deaths. Replacement level fertility. The level of fertility at which women, on average, are having only enough children to replace themselves and their partners in the population. It can thought of as the average number of lifetime births per woman. The population living in urban areas.
Countries differ in the way they classify population as urban or rural.
Typically, population living in a community or settlement with a population of 2,000 or more is considered urban.