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  2. Demographics of the United States - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_the_United...

    On April 1, 2020, the United States had a population of 331,449,281, according to the 2020 United States census. [ 32 ] The following demographic statistics are from the CIA World Factbook estimated as of 2018 [update], [ 5 ] unless otherwise indicated. Graphs are unavailable due to technical issues.

  3. Population pyramid - Wikipedia

    en.wikipedia.org/wiki/Population_pyramid

    A population pyramid (age structure diagram) or " age-sex pyramid " is a graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically takes the shape of a pyramid when the population is growing. [1] Males are usually shown on the left and females on the right ...

  4. Demographics of the world - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_the_world

    Demographics of the world. Demographics of Earth. Population pyramid of the world in 2022 by the UN. Population. Over 8,120,531,329 (estimated) Fertility rate. 2.27 (2021) Earth has a human population of over 8 billion as of 2024, with an overall population density of 50 people per km 2 (130 per sq. mile). Nearly 60% of the world's population ...

  5. Demographic statistics - Wikipedia

    en.wikipedia.org/wiki/Demographic_statistics

    Demographic statistics are measures of the characteristics of, or changes to, a population. Records of births, deaths, marriages, immigration and emigration and a regular census of population provide information that is key to making sound decisions about national policy. [1][2] A useful summary of such data is the population pyramid.

  6. Demographic transition - Wikipedia

    en.wikipedia.org/wiki/Demographic_transition

    In demography, demographic transition is a phenomenon and theory which refers to the historical shift from high birth rates and high death rates to low birth rates and low death rates, as societies attain more technology, education (especially of women) and economic development. [ 1 ] The demographic transition has occurred in most of the world ...

  7. Demography - Wikipedia

    en.wikipedia.org/wiki/Demography

    The Demography of the World Population from 1950 to 2100. Data source: United Nations — World Population Prospects 2017. Demography (from Ancient Greek δῆμος (dêmos) 'people, society' and -γραφία (-graphía) 'writing, drawing, description') [1] is the statistical study of human populations: their size, composition (e.g., ethnic group, age), and how they change through the ...

  8. File:Population pyramid of the United States by race ...

    en.wikipedia.org/wiki/File:Population_pyramid_of...

    English: Population pyramid of the United States by race-ethnicity in 2020 Note: White, Black etc. are the Non-Hispanic populations as such. For example, Whites in this instance is relating to Non-Hispanic Whites. Other includes Native Hawaiian's and American Indians

  9. Demographics of China - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_China

    The 2022 data shows a declining population for the first time since 1961. [ 15 ] Population pyramid of China from 1950 to 2022 Age structure projections for China up to 2100