The world population, the total number of living humans, surpassed eight billion in mid-November 2022, according to United Nations estimates. Reaching the first billion took approximately 300,000 years of human history. However, the subsequent increase to eight billion occurred in just 218 years, highlighting a significant acceleration in population growth.
Discussions surround the world's population, addressing concerns about a potential collapse in birth rates. The narrative shifts from a demographic crisis to one of care, highlighting challenges in shrinking and aging societies globally, needing new solutions.
Between 1700 and 1900, Europe's population increased from about 100 million to over 400 million.
In 1900, the global population was about 1.6 billion.
In 1920, the United States saw its population grow to 106 million.
In 1927, the world population reached two billion.
In 1941, the population of the Indian subcontinent increased to 389 million.
During the period 1950-55 the crude birth rate was 36.9/1,000 population and the crude death rate was 19.1/1,000.
Since 1951, the UN has issued multiple projections of future world population, based on different assumptions.
The UN's first report in 1951 indicated that during 1950–55, the crude birth rate was 36.9/1,000 population and the crude death rate was 19.1/1,000.
In 1955, the global population growth rate saw increases of over 1.8% per year.
The International Database of the United States Census Bureau estimated the world population reached three billion in July 1959.
In 1960, the world population reached three billion.
According to the Russian demographer Sergey Kapitsa, the world population grew between 67,000 BC and 1965 according to a formula.
During the period 1965–1970, the annual population growth rate peaked at 2.1%.
In 1965, the global population growth rate peaked at 2.1%.
In 1968, the global population growth rate was steadily declining from its peak.
By 1970, the global population growth rate peaked at 2.1%.
During the period 1965–1970, the annual population growth rate peaked at 2.1%.
The International Database of the United States Census Bureau estimated the world population reached four billion in April 1974.
In 1974, the global population reached four billion.
By 1975, the global population growth rate saw increases of over 1.8% per year.
In 1975, Sebastian von Hoerner proposed a formula for population growth which represented hyperbolic growth with an infinite population in 2025.
The United Nations commemorated the "Day of 5 Billion" on 11 July 1987.
In 1987, the global population reached five billion.
After the collapse of the Soviet Union, Russia's population declined significantly, from 150 million in 1991 to 143 million in 2012.
Following the United Nations' 1994 International Conference on Population and Development, framing human population growth as negatively impacting the natural environment became regarded as "anti-human".
Assuming the global fertility rate remained at its 1995 level of 3.04 children per woman, one extreme scenario predicted a massive increase to 256 billion by 2150.
In 1995, Haub estimated that around 40% of those who have ever lived did not survive beyond their first birthday.
In 1995, Haub prepared another figure, updated in 2002 and 2011, to estimate the total number of humans who have ever lived.
In 1996, Kapitsa cited estimates ranging between 80 and 150 billion for the total number of humans who have ever lived.
The United Nations commemorated the "Day of 6 Billion" on 12 October 1999.
In 1999, the global population reached six billion.
By 2000, the global population was over 6 billion.
During the period 2000–2005, the United Nations estimates that the world's population was growing at an annual rate of 1.3%.
Hopfenberg and Pimentel's 2001 findings support that "First World farmers are fueling the Third World population explosion".
In 2001, agronomist and insect ecologist David Pimentel, and behavioral scientist Russell Hopfenberg published a study on the topic that any human population predictably grows and shrinks according to available food supply.
In 2002, Haub updated the figure to estimate the total number of humans who have ever lived.
In 2003, UN Population Division population projections for the year 2150 ranged between 3.2 and 24.8 billion.
During the period 2000–2005, the United Nations estimates that the world's population was growing at an annual rate of 1.3%.
The United Nations projects that the population of 51 countries or areas, including Germany, Italy, Japan, and most of the states of the former Soviet Union, is expected to be lower in 2050 than in 2005.
In 2006, the population of the United Kingdom reached 60 million.
On 14 March 2007, the UN's revision of world population projections revised the 2050 mid-range estimate upwards by 273 million.
In 2009, UN population projections for 2050 ranged between around 8 billion and 10.5 billion.
By 2010, the global fertility rate had declined to 2.52.
Calculating the change in population from 2010 to 2015.
The Population Division of the United Nations declared the "Day of Seven Billion" to be 31 October 2011.
The United Nations estimated that the world population reached seven billion in October 2011.
In 2011, Haub updated the figure to estimate the total number of humans who have ever lived; the figure was approximately 107 billion.
In 2011, the Han Chinese constituted over 19% of the global population, making them the world's largest single ethnic group.
In late 2011, according to the UN, the world population reached seven billion.
According to the United States Census Bureau, the world population reached seven billion in March 2012.
In March 2012, the US Census Bureau (USCB) asserted that the world population reached seven billion.
In June 2012, British researchers calculated the total weight of Earth's human population as approximately 287 million tonnes (630 billion pounds), with the average person weighing around 62 kilograms (137 lb).
After the collapse of the Soviet Union, Russia's population declined significantly, from 150 million in 1991 to 143 million in 2012.
In 2012, United Nations projections showed a continued increase in population in the near future with a steady decline in population growth rate.
By 2013, Russia's population decline appeared to have halted.
In 2014, an estimate forecasts between 9.3 and 12.6 billion people in 2100, and continued growth thereafter.
By the period 2015–20, the crude birth rate had dropped significantly to 18.5/1,000 and the crude death rate to 7.5/1,000.
Calculating the change in population from 2010 to 2015.
Currently, between 2015 and 2020, the total number of births globally is 140 million per year.
In 2015, the global population growth rate declined to 1.1%.
In December 2019, the German Foundation for World Population projected that the global population will reach 8 billion by 2023 as it increases by 156 every minute.
In 2019, the United Nations reported that the rate of population growth continues to decline due to the ongoing global demographic transition.
According to the World Health Organization, as of 2020, the global average life expectancy is 73.3 years, with women living an average of 75.9 years and men approximately 70.8 years.
As of 2020, Europe's 747 million people make up 10% of the world's population.
As of 2020, the PRB puts the figure of total humans ever lived at 117 billion.
As of 2020, the global sex ratio is approximately 1.01 males to 1 female, with 24.7% of the global population aged under 15, 65.2% aged 15–64, and 10.1% aged 65 or over.
As of 2020, the largest religious categories in the world are estimated as Christianity (31%), Islam (25%), Unaffiliated (16%) and Hinduism (15%).
As of 2020, the median age of human beings is 31 years.
Between 2015 and 2020, the global population growth rate declined to 1.1%.
In 2020, Java had a population of over 139 million.
In 2021, The National Institute of Corrections estimated that the number of people who have ever lived will rise to 121 billion by 2050, 4 billion more than their 2021 estimate.
The IMF estimated nominal 2021 gross world product at US$94.94 trillion, giving an annual global per capita figure of around US$12,290.
As of November 2022, population data from The World Factbook, was used to determine the world's most densely populated countries.
In November 2022, the United Nations estimated that the world population exceeded eight billion people.
The United Nations marked the birth of the eight billionth person on 15 November 2022.
Approximately 4.6 billion people live in these ten countries, representing around 57% of the world's population as of July 2023.
In December 2019, the German Foundation for World Population projected that the global population will reach 8 billion by 2023.
As of January 2024, there were about 5 billion global Internet users, constituting 66% of the world population.
According to linear interpolation and extrapolation of UNDESA population estimates, after 2024, it is unlikely that there will be another doubling of the global population in the 21st century.
In 1975, Sebastian von Hoerner proposed a formula for population growth which represented hyperbolic growth with an infinite population in 2025.
The 2019 Revision of the UN estimates the "medium variant" population as nearly 8.6 billion in 2030.
It is projected that the world population will reach around 9 billion by 2037.
It is projected that the number of births will peak between 2040 and 2045 at 141 million per year.
It is projected that the total number of births globally will peak during the period 2040–45 at 141 million/year.
It is projected that the number of births will peak between 2040 and 2045 at 141 million per year.
Alternative scenarios for the world population in 2050 range from a low of 7.4 billion to a high of more than 10.6 billion.
By 2050, the UN Department of Economics and Social Affairs projects the world population to be between 9 and 10 billion people.
In 2007, the UN revised its 2050 mid-range population estimate upwards by 273 million.
In 2009, UN population projections for 2050 ranged between around 8 billion and 10.5 billion.
It is expected that the median age of the world's population will rise to 37.9 years by 2050.
The National Institute of Corrections estimates that the number of people who have ever lived will rise to 121 billion by 2050.
The United Nations projects that the population of 51 countries or areas, including Germany, Italy, Japan, and most of the states of the former Soviet Union, is expected to be lower in 2050 than in 2005.
It is projected that the world population will reach 10 billion by 2057.
In a modeled future projection by the Institute for Health Metrics and Evaluation, the global population was projected to peak in 2064 at 9.73 billion people and decline to 8.79 billion in 2100.
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