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  2. Estimates of historical world population - Wikipedia

    As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.

  3. World population - Wikipedia

    In world demographics, the world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 years more to reach 8 billion.

  4. World population milestones - Wikipedia

    World population milestones went unnoticed until the 20th century, since there was no reliable data on global population dynamics. [2] The population of the world reached. one billion in 1804. two billion in 1927. three billion in 1960. four billion in 1974. five billion in 1987. six billion in 1999.

  5. Historical demography - Wikipedia

    Historical demography. Historical demography is the quantitative study of human population in the past. It is concerned with population size, with the three basic components of population change ( fertility, mortality, and migration ), and with population characteristics related to those components, such as marriage, socioeconomic status, and ...

  6. Demographic history - Wikipedia

    Demographic history. Demographic history is the reconstructed record of human population in the past. Given the lack of population records prior to the 1950s, there are many gaps in our record of demographic history. Historical demographers must make do with estimates, models and extrapolations. For the demographic methodology, see historical ...

  7. List of countries by population (United Nations) - Wikipedia

    This is a list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present. [2]

  8. List of countries by past and projected future population

    Below is a list of countries and regions of the world with their projected population, as estimated by the UN Department of Economic and Social Affairs, as of July 11, 2022. The Medium variant of the forecast for July 1, 2024, July 1, 2030, July 1, 2050 and July 1, 2100 is given. [12] [13] Country (or dependent territory) 2024. 2030.

  9. Demographics of the world - Wikipedia

    The current world population growth is approximately 1.09%. People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999.

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