Population Density

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World Population

The world population has experienced continuous growth since the end of the Bubonic Plague, Great Famine and Hundred Years Wars in 1350, population 300 million. The highest rates of growth—increases above 1.8% per year—were seen briefly during the 1950s, for a longer period during the 1960s and 1970s; the growth rate peaked at 2.2% in 1963, and declined to 1.1% by 2009. Annual births have reduced to 140 million since their peak at 173 million in the late 1990s, and are expected to remain constant, while deaths number 57 million per year and are expected to increase to 80 million per year by 2040. Current projections show a continued increase of population (but a steady decline in the population growth rate) with the population expected to reach between 7.5 and 10.5 billion in the year 2050. [1]

United Nation's population projections from 1800 to 2100

Understanding Population Growth

Entry added with information from Wikipedia

Dramatic growth beginning in 1950 (above 1.8% per year) coincided with greatly increased food production as a result of the industrialisation of agriculture brought about by the Green Revolution. The rate of growth peaked in 1964, at about 2.2% per year. The world population was at some point in 2010 estimated to be 6,915,100,000, with unreported variability. The fear is that high population numbers are putting further strain on natural resources, food supplies, fuel supplies, employment, housing, etc. in some the less fortunate countries.

Largest Population by Country

   COUNTRY                         POPULATION                  % OF WORLD POPULATION
 1. China                         1,343,740,000                        19.4%
 2. India                         1,210,193,422                          17% 
 3. United States                   311,265,000                         4.5%
 4. Indonesia                       238,400,000                        3.39%
 5. Brazil                          194,586,000                        2.81%
 6. Pakistan                        175,907,000                        2.54%
 7. Bangladesh                      164,425,000                        2.38%
 8. Nigeria                         158,259,000                        2.29%
 9. Russia                          141,927,297                        2.05%
10. Japan                           127,380,000                        1.84%

An Increase In Population Density

The scientific consensus is that the current population expansion and accompanying increase in usage of resources is linked to threats to the ecosystem. The InterAcademy Panel Statement on Population Growth, which was ratified by 58 member national academies in 1994, called the growth in human numbers "unprecedented", and stated that many environmental problems, such as rising levels of atmospheric carbon dioxide, global warming, and pollution, were aggravated by the population expansion. At the time, the world population stood at 5.5 billion, and lower-bound scenarios predicted a peak of 7.8 billion by 2050, a number that current estimates show will be reached around 2030. [2]

Population Grown Projections

Entry added with information from Wikipedia

According to projections, the world population will continue to grow until at least 2050, with the population reaching 9 billion in 2040, and some predictions putting the population in 2050 as high as 11 billion.

United Nations' World Population Prospects Report

  • The world population is currently growing by approximately 74 million people per year. Current United Nations predictions estimate that the world population will reach 9.0 billion around 2050, assuming a decrease in average fertility rate from 2.5 down to 2.0.
  • Almost all growth will take place in the less developed regions, where today's 5.3 billion population of underdeveloped countries is expected to increase to 7.8 billion in 2050. By contrast, the population of the more developed regions will remain mostly unchanged, at 1.2 billion. An exception is the United States population, which is expected to increase 44% from 305 million in 2008 to 439 million in 2050.
  • In 2000-2005, the average world fertility was 2.65 children per woman, about half the level in 1950-1955 (5 children per woman). In the medium variant, global fertility is projected to decline further to 2.05 children per woman.
  • During 2005-2050, nine countries are expected to account for half of the world's projected population increase: India, Pakistan, Nigeria, Democratic Republic of the Congo, Bangladesh, Uganda, United States, Ethiopia, and China, listed according to the size of their contribution to population growth. China would be higher still in this list were it not for its One Child Policy.
  • Global life expectancy at birth, which is estimated to have risen from 46 years in 1950-1955 to 65 years in 2000-2005, is expected to keep rising to reach 75 years in 2045-2050. In the more developed regions, the projected increase is from 75 years today to 82 years by mid-century. Among the least developed countries, where life expectancy today is just under 50 years, it is expected to be 66 years in 2045-2050.
  • The population of 51 countries or areas, including Germany, Italy, Japan and most of the successor States of the former Soviet Union, is expected to be lower in 2050 than in 2005.
  • During 2005-2050, the net number of international migrants to more developed regions is projected to be 98 million. Because deaths are projected to exceed births in the more developed regions by 73 million during 2005-2050, population growth in those regions will largely be due to international migration.
  • In 2000-2005, net migration in 28 countries either prevented population decline or doubled at least the contribution of natural increase (births minus deaths) to population growth. These countries include Austria, Canada, Croatia, Denmark, Germany, Italy, Portugal, Qatar, Singapore, Spain, Sweden, United Arab Emirates and United Kingdom.[78]
  • Birth rates are now falling in a small percentage of developing countries, while the actual populations in many developed countries would fall without immigration. By 2050 (Medium variant), India will have 1.6 billion people, China 1.4 billion, United States 439 million, Pakistan 309 million, Indonesia 280 million, Nigeria 259 million, Bangladesh 258 million, Brazil 245 million, Democratic Republic of the Congo 189 million, Ethiopia 185 million, Philippines 141 million, Mexico 132 million, Egypt 125 million, Vietnam 120 million, Russia 109 million, Japan 103 million, Iran 100 million, Turkey 99 million, Uganda 93 million, Tanzania 85 million, Kenya 85 million and United Kingdom 80 million.


Africa                        1.9 billion
Asia                          5.2 billion
Europe                        674 million
Latin America and Caribbean   765 million
North America                 448 million

United Nation's population projections by location

Summary of the World

If we could shrink the Earth's population to a village of precisely 100 people, with all existing human ratios remaining the same, it would look like this:

81 would be from less developed countries with a gross income per capita and year of US$ 3,580, 19 would be from developed countries with a gross income per capita and year of US$ 22,060.

There would be 61 Asians, 12 Europeans, 13 Africans, 9 would be from South America and the Caribbean, and 5 from North America including Canada.

75 would be non-white, while 25 would be white.

60 would mistrust their own government. No wonder, that the governments mistrust their people.

60 would live within 62 miles of a coastline.

50 would be female, and 50 would be male.

50 would rely in some manner on coastal and marine habitats for food, building sites, transportation, recreation, and waste disposal.

48 would live on less than US $2 a day.

48 would lack access to basic sanitation.

47 would be urban dwellers. The world's urban areas are expected to surpass rural areas in population around the year 2005

29 would believe in witchcraft.

25 would live in substandard housing or have no home at all.

20 would live on less than US $1 a day.

17 would be under 18 years old.

16 would lack access to safe drinking water.

16 would be unable to read and write.

14 would suffer from malnutrition.

10 would live in least developed countries.

8 would have Internet access from home.

4.5 would be citizens of the United States

1 would be infected with HIV/AIDS.

1 would be near death, and 1 would be near birth.

Only 1 would have a college education.

Half of the entire village's wealth would be in the hands of only 6 people, and most of them would be citizens of the United States.

When one considers our world from such an incredibly compressed perspective, the need for cooperation, tolerance and understanding becomes glaringly apparent.

See Also



[1] World Population

[2] Over Population

[3] Summary of the World

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