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Snippet from Wikipedia: Population density

Population density (in agriculture: standing stock and standing crop) is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term. In simple terms, population density refers to the number of people living in an area per square kilometre.

Population density refers to the statistical density in terms of people per square mile or kilometer of an area's population. Areas like Wyoming, Montana and Idado in the American Redoubt have the lowest population density in the United States; whereas states like California and New York have the highest. Population density is high in the urban areas like cities and suburbs and is low in the rural, agricultural and ranching areas. China and India have the highest population density in the world.

Preparedness Movement is focused on Population Density

The Preparedness movement, survivalists and preppers, and the strategic relocationVote with your feetfree state movement is focused on migration from crime-ridden high density urban areas to low crime rural or remote areas. Their choice for low population density is usually in places such as the American Redoubt states of Idaho, Wyoming, Montana, Eastern Oregon, Eastern Washington, Utah, Kentucky, Tennessee (Cumberland Plateau) and other low density states like Arizona, Colorado, South Dakota, North Dakota and Alaska.

Population density is the single most important factor in choosing a survivalist retreat or homestead according to New York Times best-selling author James Wesley Rawles of The Survival Blog, Jack Spirko of The Survival Podcast, Boston T. Party of Free State Wyoming, Joel Skousen of World Affairs Brief, and M.D. Creekmore of TheSurvivalistBlog.net

See Also

References

Statistics Demography Survivalism American Redoubt Strategic Relocation


File:Countries by population density.svg2) map of the world in 1994 (detailed). />2) map of the world in 1994. />

Population density (in agriculture standing stock and standing crop) is a measurement of population per unit area or unit volume; it is a quantity of type number density. It is frequently applied to living organisms, and particularly to humans. It is a key geographic term.<ref name=about>Matt Rosenberg Population Density. Geography.about.com. March 2, 2011. Retrieved on 2011-12-10.</ref>

Lists of population density of different countries are below. Lists of other population densities are in See also section.

Biological population densities

Population density is population divided by total land area or water volume, as appropriate.<ref name=about/>

Low densities may cause an extinction vortex and lead to further reduced fertility. This is called the Allee effect after the scientist who identified it. Examples of the causes in low population densities include:<ref>Minimum viable population size. Eoearth.org (2010-03-06). Retrieved on 2011-12-10.</ref>

  • Increased problems with locating sexual mates
  • Increased inbreeding

Human population density

<!– This section is linked from List of countries by population density –>

in South Europe, currently holds the record for being the most densely populated nation in the world.]]

is the least densely populated country in the world.]]

of Europe uses areas rather than colors to represent population.]]

For humans, population density is the number of people per unit of area, usually quoted per square kilometer or square mile (which may include or exclude, for example, areas of water or glaciers). Commonly this may be calculated for a county, city, country, another territory, or the entire world.

The world's population is around 7 billion,<ref>U.S. & World Population Clocks. Census.gov. Retrieved on 2011-12-10.</ref> and Earth's total area (including land and water) is 510 million square kilometers (197 million square miles).<ref>World. CIA World Handbook</ref> Therefore the worldwide human population density is around 7 billion ÷ 510 million = 13.7 per km2 (35 per sq. mile). If only the Earth's land area of 150 million km2 (58 million sq. miles) is taken into account, then human population density increases to 47 per km2 (120 per sq. mile). This includes all continental and island land area, including Antarctica. If Antarctica is also excluded, then population density rises to over 50 people per km2 (over 130 per sq. mile).<ref name=about/> However over half

of the Earth's land mass consists of areas inhospitable to human habitation, such as deserts and high mountains, and population tends to cluster around seaports and fresh water sources. Thus this number by itself does not give any helpful measurement of human population density.

Several of the most densely populated territories in the world are city-states, microstates, and dependencies.<ref name=unpop>

</ref><ref>The Monaco government uses a smaller surface area figure resulting in a population density of 18,078 per km2</ref> These territories have a relatively small area and a high urbanization level, with an economically specialized city population drawing also on rural resources outside the area, illustrating the difference between high population density and overpopulation.

Cities with high population densities are, by some, considered to be overpopulated, though this will depend on factors like quality of housing and infrastructure and access to resources.<ref>Human Population. Global Issues. Retrieved on 2011-12-10.</ref> Most of the most densely populated cities are in southern and eastern Asia, though Cairo and Lagos in Africa also fall into this category.<ref>The largest cities in the world by land area, population and density. Citymayors.com. Retrieved on 2011-12-10.</ref>

City population and especially area are, however, heavily dependent on the definition of “urban area” used: densities are amost invariably higher for the central city area than when suburban settlements and the intervening rural areas are included, as in the concepts of agglomeration or metropolitan area, the latter including sometimes neighboring cities. For instance, Milwaukee has a greater population density when just the inner city is measured, and the surrounding suburbs excluded.<ref>The Population of Milwaukee County. Wisconline.com. Retrieved on 2011-12-10.</ref>

In comparison, based on a world population of seven billion, the world's inhabitants, as a loose crowd taking up ten square feet (one square metre) per person (Jacobs Method), would occupy a space a little larger than Delaware's land area.

Most densely populated countries/regions

With population above 1 million
Rank Country/Region Population Area (km2) Density <br>(Pop. per km2)
1

5,183,700 710

2

7,061,200 1,104

3

1,234,596 750

4

152,518,015
|| 147,570 ||align=center| {{#expr: 152518015 / 147570 round 0}}
5

(R.O.C)

23,361,147 36,190

6

1,288,000 2,040

7

50,219,669 99,538

8

10,718,379 26,338

9

16,760,000 41,526

10

4,224,000 10,452

With population above 10 million
Rank Country/Region Population Area (km2) Density <br>(Pop. per km2)
1

152,518,015 147,570

2

(R.O.C)

23,361,147 36,190

3

50,219,669 99,538

4

10,718,379 26,338

5

16,760,000 41,526

6

1,210,193,422 3,185,263

7

10,413,211 27,750

8

11,007,020 30,528

9

127,290,000 377,944

10

98,678,000 300,076

Other methods of measurement

While arithmetic density is the most common way of measuring population density, several other methods have been developed which aim to provide a more accurate measure of population density over a specific area.

  • Arithmetic density: The total number of people / area of land (measured in square miles or square kilometers ).
  • Physiological density: The total population / area of arable land.
  • Agricultural density: The total rural population / area of arable land.
  • Residential density : The number of people living in an urban area / area of residential land.
  • Urban density : The number of people inhabiting an urban area / total area of urban land.
  • Ecological optimum: The density of population which can be supported by the natural resources.

See also

Lists of city density and other lists

References

population_density.txt · Last modified: 2020/03/12 18:37 (external edit)