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	[[Category:Sociology]]		[[Category:Sociology]]
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			== Demography ==
			<gallery>
			File:Global_Population-Pyramid-1950-to-2100.jpg\|Global Population Pyramid 1950 to 2100
			File:1888-01-22,_La_Ilustración_Española_y_Americana,_El_censo_de_población,_Alcázar.jpg\|El censo de población, Alcázar
			File:Población_Mundial.svg\|Población Mundial
			File:World_population_growth_-_time_between_each_billion-person_growth.svg\|World population growth - time between each billion-person growth
			File:Population_by_broad_age_group_projected_to_2100,_OWID.svg\|Population by broad age group projected to 2100
			</gallery>

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'''Demography''' is the statistical study of populations, especially human beings. As a very general science, it can analyze any kind of dynamic living population, i.e., one that changes over time or space (see [[population dynamics]]). Demography encompasses the study of the size, structure, and distribution of these populations, and spatial or temporal changes in them in response to birth, migration, aging, and death.

== Overview ==

Demographic analysis can cover whole societies or groups defined by criteria such as education, nationality, religion, and ethnicity. Educational institutions usually treat demography as a field of sociology, though there are a number of independent demography departments.

Formal demography limits its object of study to the measurement of population processes, while the broader field of social demography or population studies also analyzes the relationships between economic, social, cultural, and biological processes influencing a population.

== History ==

The term "demography" is of French origin and was first coined by [[Achille Guillard]] in 1855. However, the study of human populations and how they change dates back to antiquity. Early demographers were more concerned with counting population size than with examining the structures of populations.

== Methods ==

Demographic research methods have largely been developed in the 20th century. These methods include the collection of data from vital statistics registries and through censuses, surveys, interviews, and other studies. Demographers also use mathematical models to simulate future demographic trends.

== See also ==

* [[Population dynamics]]
* [[Achille Guillard]]
* [[Sociology]]
* [[Population studies]]

== References ==

<references />

{{stub}}

[[Category:Demography]]
[[Category:Population]]
[[Category:Sociology]]
[[Category:Statistics]]

Demography - Revision history

Prab: CSV import

Prab: CSV import