Population projections for all countries are prepared annually by the Bank's Population and Human Resources Department. They are published first in summary form in the Bank's World Development Report and later in greater detail as technical notes or working papers and, in alternate years, as a...

Despite ongoing declines in fertility in many countries, the population of the world is experiencing a period of rapid expansion, and its size is expected to reach 10 billion by the end of the demographic transition. Three causes of this growth are identified and quantified: 1) fertility above...