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The web page lists current estimates of the world population in history, with a range of 1.3 to 1.4 billion for 1900. It also provides historical and prehistorical population data, as well as comparisons and sources.
Learn about the history, current status and future projections of the world population, which exceeded eight billion in 2022. Explore the factors that affect population growth, decline and distribution, such as fertility, mortality, migration and age structure.
Learn about the current and historical population of Earth, its distribution, density, growth rate, fertility rate, urbanization, and more. As of 2024, the world population is estimated at over 8 billion, with Asia having the largest share.
Compare the maximum land area of different historical empires, from the British Empire to the Xiongnu Empire, using data from various sources. See the percentage of the Earth's land surface each empire controlled and the year of its greatest extent.
A Valeriepieris circle is a figure drawn on the Earth's surface that contains most of the human population. Learn about its history, variations, and applications in spatial data analysis.
Learn about the reconstructed record of human population in the past, from ancient times to the present. Explore the factors, trends, and patterns of population growth, decline, and distribution across continents and regions.
Learn about Earth, the only planet with life and liquid surface water, and its physical characteristics, atmosphere, climate, and history. Find out how Earth orbits the Sun, rotates, and interacts with other planets and space objects.
The web page lists the estimated and projected populations of the world and its continents, as well as the dates of global billionth milestones. The world population reached six billion on 12 October 1999, according to the United Nations Population Fund.