FACTOID # 22: South Dakota has the highest employment ratio in America, but the lowest median earnings of full-time male employees.
 
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Encyclopedia > City area
The city of San Luis Obispo, an example of an urban area.
The city of San Luis Obispo, an example of an urban area.

An urban area is an area with an increased density of human-created structures in comparison to the areas surrounding it. This term is at one end of the spectrum of suburban and rural areas. An urban area is more frequently called a city or town. Image File history File linksMetadata Download high resolution version (2048x1536, 891 KB) Summary San Luis Obispo looking east from the top of Bishop Peak. ... Image File history File linksMetadata Download high resolution version (2048x1536, 891 KB) Summary San Luis Obispo looking east from the top of Bishop Peak. ... San Luis Obispo, San Luis, or SLO (Spanish for ) is a city in California. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... Illustration of the backyards of a surburban neighbourhood Suburbs are inhabited districts located either on the outer rim of a city or outside the official limits of a city (the term varies from country to country), or the outer elements of a conurbation. ... Rural area in Dalarna, Sweden Qichun, a rural town in Hubei province, China Rural areas are sparsely settled places away from the influence of large cities and towns. ... Chicago from the air. ... Main street in Bastrop, Texas, a small town A town is a residential community of people ranging from a few hundred to several thousands, although it may be applied loosely even to huge metropolitan areas. ...


Urban areas are created and further developed by the process of urbanization. Measuring the extent of an urbanized area helps in analyzing population density and urban sprawl, and in determining urban and rural populations. Urban sprawl (also: suburban sprawl), a term with pejorative implication, refers to the rapid and expansive growth of a greater metropolitan area, traditionally suburbs (or exurbs) over a large area. ...


Unlike an urban area, a metropolitan area includes not only the urban area, but also satellite cities plus intervening rural land that is socio-economically connected to the urban core city, typically by employment ties through commuting, with the urban core city being the primary labor market. This makes metropolitan areas a less relevant statistic for determining per capita land usage and densities. A metropolitan area is a large population center consisting of a large city and its adjacent zone of influence, or of several neighboring cities or towns and adjoining areas, with one or more large cities serving as its hub or hubs. ... Satellite cities are smaller municipalities that are adjacent to a major city which is the core of a metropolitan area. ... Rural area in Dalarna, Sweden Qichun, a rural town in Hubei province, China Rural areas are sparsely settled places away from the influence of large cities and towns. ... Employment is a contract between two parties, one being the employer and the other being the employee. ... See Commute for other meanings. ...

Contents

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Definitions

Definitions vary somewhat amongst different nations. The minimum density requirement is generally 400 persons per square kilometer[citation needed]. In Australia, urban areas are referred to as "urban centres" and are defined as population clusters of 1000 or more people, with a minimum density of 200 people per square kilometer [1]. In Japan urbanized areas are defined as contiguous areas of densely inhabited districts (DIDs) using census enumeration districts as units with a density requirement of 4,000 people per square kilometer. European countries define urbanized areas on the basis of urban-type land use, not allowing any gaps of typically more than 200 meters, and use satellite photos instead of census blocks to determine the boundaries of the urban area. In less developed countries, in addition to land use and density requirements, a requirement that a large majority of the population, typically 75%, is not engaged in agriculture and/or fishing is sometimes used. Statistics New Zealand defines New Zealand urban areas for statistical purposes as a settlement with a population of a thousand people or more. 1870 US Census for New York City A census is the process of obtaining information about every member of a population (not necessarily a human population). ... World map showing Europe Political map (neighboring countries in Asia and Africa also shown) Europe is one of the seven traditional continents of the Earth. ... Land use is the pattern of construction and activity land is used for. ... In the broadest sense, remote sensing is the measurement or acquisition of information of an object or phenomenon, by a recording device that is not in physical or intimate contact with the object. ... Statistics New Zealand (Te Tari Tatau) is a New Zealand government department, and the source of the countrys official statistics. ... Statistics New Zealand defines New Zealand urban areas for statistical purposes. ...


In France, urban areas are referred to as unitĂ©s urbaines which literally mean "urban units" in the French language. In France, there are also the concepts of aire urbaine and agglomĂ©ration. In France an unité urbaine (literally: urban unit) is a statistical area defined by INSEE, the French national statistics office, for the measurement of contiguously built-up areas. ... French (français, langue française) is one of the most important Romance languages, outnumbered in speakers only by Spanish and Portuguese. ... In France an aire urbaine (literally: urban area) is roughly the equivalent of a US Metropolitan Statistical Area. ... In the study of human settlements, an agglomeration is an extended city or town area comprising the built-up area of a central place (usually a municipality) and any suburbs or adjacent satellite towns. ...

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United States

In the United States there are two categories of urban area. The term urbanized area denotes an urban area of 50,000 or more. Urban areas under 50,000 are called urban clusters. Urbanized areas were first delineated in the United States in the 1950 census, while urban clusters were added in the 2000 census. There are 1371 United States Urban Areas & Urban Clusters with more than 10,000 people. All Urban Areas (UAs) and Urban Clusters (UCs) over 10,000 in the United States ...


The US Census Bureau defines an urban area as: "Core census block groups or blocks that have a population density of at least 1,000 people per square mile (386 per square kilometer) and surrounding census blocks that have an overall density of at least 500 people per square mile (193 per square kilometer)."

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Canada

In Canada, an urban area is an area that has more than 400 people per square kilometre and has more than 1,000 people [1]. If two or more urban areas are within two kilometres of each other, they are merged into a single urban area. [1] The boundaries of an urban area are not influenced by municipal or even provincial boundaries. [1]

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See also

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Ranked by population Figures are estimates for the usually resident population at 30 June 2005. ... This is a list of all the urban areas of the European Union which have more than 750,000 inhabitants in 2005. ... The urban areas identified below are defined by Statistics Canada with reference to continuous population density, ignoring municipal boundaries. ... Urban culture is the culture of cities. ...

References

  1. ^ a b c Statistics Canada Dictionary
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External links


 
 

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