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An urban area [a] is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000. [2] Urban areas originate through urbanization, and researchers categorize them as cities, towns ...
Urban and rural populations in the United States (1790 to 2010) [1] Choropleth map of urban population as percentage of US states and D.C. total population in 2020. The urbanization of the United States has progressed throughout its entire history.
Since urban areas are composed of census blocks and not cities, counties, or county-equivalents, urban area boundaries may consist of partial areas of these political units. Urban areas are distinguished from rural areas: any area not part of an urban area is considered to be rural by the Census Bureau. The list in this article includes urban ...
These challenges often create rural-urban income disparities. [20] Rural spaces add new challenges for economic analysis that require an understanding of economic geography: for example understanding of size and spatial distribution of production and household units and interregional trade, [21] land use, [22] and how low population density ...
Urbanization over the past 500 years [13] A global map illustrating the first onset and spread of urban centres around the world, based on. [14]From the development of the earliest cities in Indus valley civilization, Mesopotamia and Egypt until the 18th century, an equilibrium existed between the vast majority of the population who were engaged in subsistence agriculture in a rural context ...
Exurbs can be defined in terms of population density across the extended urban area, for example "the urban core (old urban areas including Siming and Huli, where the population density is greater than 51 persons per ha), the suburban zone (old urban and new urban transitional zones including Haicang and Jimei, where the population density is ...
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Rural exodus can also follow an ecological or human-caused catastrophe such as a famine or resource depletion. These are examples of push factors. People can also move into town to seek higher wages, educational access and other urban amenities; examples of pull factors.