There are many estimates of the size of the world’s population. Some sources say it will be 7.8 billion, while others say it will be 10.2 billion or 11.2 billion. The International Institute for Applied Systems Analysis, based in Vienna, Austria, produced a forecast in 2014. A later update suggests the population will peak at around 9.7 billion in 2070. Which figure is right? Find out! Here are some facts to consider.
7.8 billion
While the UN has released estimates for the global population for several years, the most recent ones are based on estimates developed by the International Programs Centre, a division of the U.S. Census Bureau. The figures, derived from available data, include census, survey, administrative, and mortality data, as well as migration and fertility rates. The latest estimate of the world’s population in 2020 is 7.8 billion, and is in line with the previous estimates.
The UN projects that the world’s population will increase to 7.8 billion in 2020, with a population of 11 billion by 2100. However, these long-term projections are subject to change. In a report issued in 2009, the United Nations stated that by 2100, global population growth would be less than 0.1% annually, due to declining birth rates. In other words, if you look at the projections of the United Nations, the world will have a population of 7.8 billion in 2021.
9.9 billion
According to the UN, the world’s population will reach 9.9 billion by the year 2020, up by 2.3 billion or 29 percent from 7.6 billion today. The population of the world is expected to continue ageing throughout the century. By midcentury, 16 percent of the world’s population will be 65 or older, while the percentage in less-developed countries will double, rising to 14 percent. In the meantime, there are many factors that will play into the future growth of the world population.
The latest world population data sheet shows that by 2050, the world population will increase from 7.8 billion to 9.9 billion, an increase of almost 25 percent since the previous projection. The projections are based on estimates of medium fertility and national census data. The Population Division uses data from national sources and evaluates them to account for incompleteness. This data sheet also examines the potential impact of population growth on environmental conditions. And while the world population is growing, there is still room for improvement.
10.2 billion
By the year 2020, the world’s population will be 10.2 billion people, with a high proportion of older people. Among the world’s major regions, sub-Saharan Africa is projected to experience the highest population growth, with 43% of the population below the age of fifteen. Twenty-five countries are expected to double their current population between 2020 and 2050, with Angola, Benin, and Niger seeing the largest growths: 150% and 175%.
According to UN projections, the world population will more than double in the next sixty years, reaching almost 11 billion by the year 2100. A study by the UN Population Division indicates that world population will peak at almost 11 billion by the year 2100, a number that is slightly lower than the current global population. But this number may not be that far off; future projections should be closely monitored. And if we don’t change our lifestyles, we may see a world with just 7.3 billion people in 2050 and 10.9 billion by 2100.
11.2 billion
The world’s population is projected to increase by 11.2 billion people by 2020, with a corresponding rise in the number of children. Africa is the main contributor to population growth, with the continent’s population expected to double between 2020 and 2050, reaching 3.4 billion to 5.6 billion people. Rising child population in Africa has been attributed to persistently high fertility levels, though rates have declined in recent years. The total fertility rate in Africa, for example, is now about one-fourth of that of the 1970s.
Earlier projections have indicated that the world’s population would be around seven billion by 2020. While the earliest revision in 1968 predicted a population of 5.44 billion, most of the estimates have been close to the 1990 estimate. The most recent UN population estimate, the Revision of World Population Prospects, has been revised to a lower level. The previous estimates ranged from 6.8 billion to 7.2 billion, but the latest figures are the most recent. The population estimates are based on probabilistic statistics, so the population growth rates can fluctuate.
12.2 billion
By 2020, the world’s population will reach a new demographic balance. While low fertility and high mortality slowed the rate of population growth in the past, low fertility is likely to keep the change in numbers modest in the future. In 1950, there were just 2.5 billion people on the planet, and there are now 7.7 billion. The UN estimates that by the end of this century, there will be around 11.2 billion people on earth.
UN estimates of future population growth are not entirely accurate. There is significant variation across the various regions of the world. The UN, for example, extrapolates trends from countries in similar regions or with similar socio-economic profiles. These estimates can be highly inaccurate, which is why UN projections are only considered reliable if they are based on accurate data. For those who are worried about the accuracy of UN population figures, there are other methods available.
12.5 billion
With the current concentration of women in childbearing ages, the world population will grow at an impressive pace. In developing countries, rapid growth in the elderly population poses an enormous challenge. This will result in an even higher global population in the future. However, these projections should be interpreted cautiously. The world population will not likely reach 12 billion in the near or distant future. Instead, there are a number of important factors that will determine how fast the population will increase.
In estimating global population, experts have used three to four significant figures to calculate the population. The most widely accepted estimates are those from the UN Population Division. They are revised regularly and aim to be comparable over time and countries. The methodology behind these estimates is detailed in the UN’s Methodology Report. Despite their limitations, they are still useful as a starting point. However, they do not accurately reflect the future of the planet.
14.2 billion
Using the U.S. Census Bureau’s International Programs Center’s estimates, the UN projects the number of people on Earth will reach 14.2 billion by 2020. The estimates are based on available data on mortality, fertility, and migration. The world population is now seven billion. On March 12, 2012, that number was predicted to reach fourteen billion. However, the UN’s estimates are not precise. Changing global populations can result from wars, disease epidemics, and technological advances.
The United Nations calculates the world population every two years, and publishes the results in the Worldometer. The World Population Prospects series is a standard for United Nations population figures. In 2010, the number of people on earth was 7.8 billion. The UN’s World Population Estimates report was the most accurate and up-to-date estimate. The data from the UN’s World Population Prospects reveals that the population is rising at a steady rate.
15.2 billion
The UN recently updated its projections of world population growth for the years from 1950 to 2050. These numbers, however, are still considered most probable’ estimates, and the decline in world population is likely to be more rapid than the downward revision to the United Nations’ figures. For the most part, the UN’s projections are optimistic, but there are several reasons why they may be overly optimistic. Let’s take a look at some of these trends and their implications for the world population.
The postwar boom contributed to this rapid growth. This baby boom was widespread across the post-war world, including China and India. In the 1960s, a second baby boom began. This second baby boom helped prolong the rate of population growth, and by the 1990s, the rates of growth slowed. The post-war baby boom generation’s great-grandchildren, meanwhile, saw their birth rate drop sharply.
16.2 billion
The United Nations estimates the world’s population will reach 16.2 billion by the year 2020. The numbers are based on available data from surveys, censuses, and administrative records. Other factors such as fertility, mortality, and migration are included in the calculations. The UN reports that on March 12, 2012 the world population reached seven billion people. It will take about 200 years for the population to double again. This projection is based on the same assumptions as the United Nations’.
The number of people in the world is steadily rising. The population of the world reached an all-time high of nearly 10 billion in 2000, and it is predicted to reach 16.2 billion by 2020. However, the growth rate has been slow and has fluctuated, particularly after the end of the “baby boom” period. In fact, birth rates fell below replacement levels after that time. However, during the ‘baby boom’ era, the number of births reached a peak in 1968 when the fertility rate was 2.1%.
18.2 billion
The world’s population will reach 18.2 billion by 2020, and there are currently more than seventy million people suffering from heart disease. According to the World Bank and World Health Organisation, this disease will claim nearly one in every two lives worldwide. According to the UN, there are nearly 385,000 babies born globally every day between 2020 and 2070. The crude birth rate is roughly 267 per minute, or nearly four babies born globally every second.
The estimated target population is different for different regions of the world, but the highest concentrations are in the Americas, Europe, and Western Pacific. In fact, the target population in Europe, for example, is around 44.5 million people, or 17.2% of the total. In the Eastern Mediterranean and South East Asia, the target population is much smaller. Overall, the global population will reach 18.2 billion by 2020 if the population of these countries continues to grow.
