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Statistical study of human populations, especially with reference to size and density, distribution, and vital statistics. Contemporary demographic concerns include the global birth rates, the interplay between population and economic development, the effects of birth control, urban congestion, illegal immigration, and labour force statistics. The basis for most demographic research lies in population censuses and the registration of vital statistics.
This entry comes from Encyclopædia Britannica Concise. For the full entry on demography, visit Britannica.com.