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demography de·mog·ra·phy (dĭ-mŏg'rə-fē)
The study of the characteristics of human populations, such as size, growth, density, distribution, and vital statistics.
The quantitative study of human populations. Demographers study subjects such as the geographical distribution of people, birth and death rates, socioeconomic status, and age and sex distributions in order to identify the influences on population growth, structure, and development.