While data is collected on population growth, it is difficult for even sustainability professionals to understand what will happen on a global scale when the world's population reaches 10 or 15 billion people. Chart and table of World population from 1950 to 2020. ( 2 ) Census reports and other statistical publications from national statistical offices, ( 3 ) Eurostat: Demographic Statistics, ( 4 ) United Nations Statistical Division. Backlinks from other websites and blogs are the lifeblood of our site and are our primary source of new traffic. In fact, there has been subsequent research which places the day of six billion nearer to 18 June or 19 June 1999.  The United States saw its population grow from around 5.3 million in 1800 to 106 million in 1920, exceeding 307 million in 2010. It would be another 123 years before it reached two billion in 1927, but it took only 33 years to rise by another billion people, reaching three billion in 1960.
In 2018, the world’s population growth rate was 1.12%. Estimates cited are for the beginning of the 1st millennium ("year 0"), the beginning of the 2nd millennium ("year 1000"), and for the beginning each century since the 16th (years 1820 and 1913 are given for the 19th and 20th century, respectively, as Maddison presents detailed estimates for these years), and a projection for the year 2030. Africa is the second most populated continent, with around 1.34 billion people, or 17% of the world's population. China's population rose from approximately 430 million in 1850 to 580 million in 1953, and now stands at over 1.3 billion. The world population growth rate declined from 2.2% per year 50 years ago to 1.05% per year. Sergei P Kapitza, 'The phenomenological theory of world population growth', Learn how and when to remove this template message, List of countries and dependencies by population, List of countries and dependencies by population density, Institute for Health Metrics and Evaluation, sustainable limit to the world population, Global Assessment Report on Biodiversity and Ecosystem Services, List of sovereign states and dependencies by total fertility rate, List of countries by past and projected future population, List of countries by population growth rate, "World Development Indicators – Google Public Data Explorer", "World Population to Hit Milestone With Birth of 7 Billionth Person", "World Population Prospects, 2012 revision (697 million births from 1985–1990)", "World Population estimates by the US Census Bureau", "CIA, The World Factbook: Field Listing: Median Age", "World Population Prospects: The 2015 Revision", "Regions in the world by population (2020)", "Population estimates of the Roman Empire", "Plague, Plague Information, Black Death Facts, News, Photos", "History of Europe – Demographic and agricultural growth", "Historical Estimates of World Population", "Qing China's Internal Crisis: Land Shortage, Famine, Rural Poverty", "Super-Sized Cassava Plants May Help Fight Hunger In Africa", "U.S. News 08/18/97: How many people were here before Columbus?
[But] it will take a very long time to humanely reduce total population to a size that is sustainable." The table below shows historical and predicted regional population figures in millions. Colder Northern latitudes tended to have lower populations.  Additionally, the population estimate of 2 million for North America for the same time period represents the low end of modern estimates, and some estimate the population to have been as high as 18 million.
The world population has grown tremendously over the past 2,000 years.  In June 2014, there were around 3.03 billion global Internet users, constituting 42.3% of the world population. , The pre-Columbian population of the Americas is uncertain; historian David Henige called it "the most unanswerable question in the world. During the 20th century, the global population saw its greatest increase in known history, rising from about 1.6 billion in 1900 to over 6 billion in 2000. , In May 2008, the price of grain was pushed up severely by the increased cultivation of biofuels, the increase of world oil prices to over $140 per barrel ($880/m3), global population growth, the effects of climate change, the loss of agricultural land to residential and industrial development, and growing consumer demand in the population centres of China and India. be false precision; in spite of being stated to four, seven or even ten digits, they should not be interpreted as accurate to more than three digits at best (estimates by the United States Census Bureau and by the United Nations differ by about 0.5–1.5%).
 Paul Ehrlich also advocates making "modern contraception and back-up abortion available to all and give women full equal rights, pay and opportunities with men," noting that it could possibly "lead to a low enough total fertility rate that the needed shrinkage of population would follow.
Colder Northern latitudes tended to have lower populations.
Sergei P Kapitza, 'The phenomenological theory of world population growth'. ", "The present figures are a revision and update of those presented on this website in 2003.  An alternative scenario is given by the statistician Jorgen Randers, who argues that traditional projections insufficiently take into account the downward impact of global urbanization on fertility. , Estimates for yet deeper prehistory, into the Paleolithic, are of a different nature. Data sources This map uses data from Angus Maddison’s population estimates. , Population growth in the West became more rapid after the introduction of vaccination and other improvements in medicine and sanitation.
to 2007 A.D. With each set of estimates starting with the first number available, the missing years have been filled i…
Includes high-resolution map. Northern America, primarily consisting of the United States and Canada, has a population of around 368 million (5%), and Oceania, the least populated region, has about 42 million inhabitants (0.5%). One estimate of the population of the Roman Empire, from Spain to Asia Minor, in 14 A.D. is 45 million. to 1 A.D. period. ", "Nguyễn Thị Thùy Dung - công dân thứ 90 triệu của Việt Nam", "Les Philippines comptent désormais cent millions d'habitants - Asie-Pacifique - RFI", "Full scholarship awarded to Wake County baby named 1 millionth resident", "MONGOLIA WELCOMED HER 3-MILLIONTH CITIZEN", "A NAME "MONGOLJIN" WAS GIVEN TO THE 3-MILLIONTH CITIZEN OF MONGOLIA", "Newborn Max Danner is Silicon Valley's three millionth resident", "Kyrgyzstan Goes Bananas for Citizen No.
 However, neo-Malthusians point out that fossil fuels provided the energy for the Green Revolution, in the form of natural gas-derived fertilizers, oil-derived pesticides, and hydrocarbon-fueled irrigation, and that many crops have become so genetically uniform that a crop failure in any one country could potentially have global repercussions.
As a general rule, the confidence of estimates on historical world population decreases for the more distant past.
, Starting in AD 2, the Han Dynasty of ancient China kept consistent family registers in order to properly assess the poll taxes and labor service duties of each household. In summary, estimates for the progression of world population since the late medieval period are in the following ranges:to josh engel. Historically, human population control has been implemented by limiting a region's birth rate, by voluntary contraception or by government mandate. 34 (no. ", "Feed the world? One scenario predicts a massive increase to 256 billion by 2150, assuming fertility remains at 1995 levels. It was another 123 years before it reached two billion in 1927, but it took only 33 years to reach three billion in 1960.