Population growth showing projections for later this century. .
Demography is the statistical study of all populations. It can be a very general science that can be applied to any kind of dynamic population that is one that changes over time or space . It encompasses the study of the size structure and distribution of populations and spatial and/or temporal changes in them in response to birth migration aging and death.
Demography is that branch of social sciencewhich deals with the study of sizestructure and distribution of populationsalong with the spatial and temporal changes in them in response to birthmigrationaging and death.
Demographic analysis can be applied to whole societies or to groups defined by criteria such as education nationality religion and ethnicity. In academia demography is often regarded as a branch of either anthropology economics or sociology. Formal demography limits its object of study to the measurement of populations processes while the more broad field of social demography population studies also analyze the relationships between economic social cultural and biological processes influencing a population. 1
The term demographics is often used erroneously for demography but refers rather to selected population characteristics as used in government marketing or opinion research or the demographic profiles used in such research.
