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Published estimates for the 1st century ("AD 1") suggest uncertainty of the order of 50% (estimates range between 150 and 330 million). Some estimates extend their timeline into deep prehistory, to " 10,000 BC", i.e., the early Holocene, when world population estimates range roughly between 1 and 10 million (with an uncertainty of up to an ...
In world demographics, the world population is the total number of humans currently alive. 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.
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 ] Afghanistan. Albania.
The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999. [15] [16] [17] It reached the 2 billion mark in 1927, the 3 billion mark in 1960, 4 billion in 1974, and 5 billion in 1987. [18] The overall population of the world is approximately 8 billion as of November 2022.
List of countries by population (United Nations) 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]
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 demography .
1970 ( MCMLXX) was a common year starting on Thursday of the Gregorian calendar, the 1970th year of the Common Era (CE) and Anno Domini (AD) designations, the 970th year of the 2nd millennium, the 70th year of the 20th century, and the 1st year of the 1970s decade.
The 20 countries in the world in which the population has declined between 2010 and 2015 Historical population growth rate (1950–1955) estimated by the UN [7]