The central concept that differentiates the concept "metropolitan area" from other demographic organizations is found in the focus given to that grouping. Either the idea of ​​a radial system, centralized with a main city, whose size is generally defined by the corresponding administrations, and with high population densities – metropolitan area. Or the consideration of the urban core as the sum of one or more main cities that in turn may have their corresponding metropolitan areas, and which, due to their growth, have come to merge into a higher grouping –conurbation–. In certain cases of this second model, the physical extension and population would be enormous, forming urban spaces with tens of millions of inhabitants that would group together already large cities and form megalopolises. In practice, the concepts: metropolis, metropolitan area, conurbation, megalopolis and other more general concepts can refer to the same thing, but previously setting the qualities or variables that we wish to include in the geographical space, proximity or population density being typical, but not definitive.

The sociological thinking on urban society is enriching: consider whether it is that of sociologists themselves (Alain Touraine in The Transformation of Metropolis) or that of filmmakers (Fritz Lang in Metropolis) or that of specialists in human ecology (Amos H. Hawley" in The Structure of Social Systems, a classic).

Finally, the development of many rural areas with thousands of single-family houses, roads instead of streets, numerous housing developments, green spaces everywhere instead of parks and an area of ​​tens of square kilometers, has built a new concept of city that no longer has much to do with the typical city, as it has very expensive infrastructure due to its low density and large area, but a higher quality of life. There is therefore great concern and dedication on the part of the municipality for the definition of priorities and their budget allocation. The study of social priorities as indices, which make up social indicators of regional development, which is the ultimate objective of such regional plans, deserves independent treatment. Although it is not the only topic, transportation, media, education, health and, of course, work deserve a prominent place and the area must be equipped with all of this.

There are well-documented projects underway of this new human condition for new questions and answers.

The novel Suspicion by Jose Ángel Mañas is set in municipalities in the metropolitan area of ​​Madrid such as Navalcarnero or Tres Cantos.

The central concept that differentiates the concept "metropolitan area" from other demographic organizations is found in the focus given to that grouping. Either the idea of ​​a radial system, centralized with a main city, whose size is generally defined by the corresponding administrations, and with high population densities – metropolitan area. Or the consideration of the urban core as the sum of one or more main cities that in turn may have their corresponding metropolitan areas, and which, due to their growth, have come to merge into a higher grouping –conurbation–. In certain cases of this second model, the physical extension and population would be enormous, forming urban spaces with tens of millions of inhabitants that would group together already large cities and form megalopolises. In practice, the concepts: metropolis, metropolitan area, conurbation, megalopolis and other more general concepts can refer to the same thing, but previously setting the qualities or variables that we wish to include in the geographical space, proximity or population density being typical, but not definitive.

The sociological thinking on urban society is enriching: consider whether it is that of sociologists themselves (Alain Touraine in The Transformation of Metropolis) or that of filmmakers (Fritz Lang in Metropolis) or that of specialists in human ecology (Amos H. Hawley" in The Structure of Social Systems, a classic).

Finally, the development of many rural areas with thousands of single-family houses, roads instead of streets, numerous housing developments, green spaces everywhere instead of parks and an area of ​​tens of square kilometers, has built a new concept of city that no longer has much to do with the typical city, as it has very expensive infrastructure due to its low density and large area, but a higher quality of life. There is therefore great concern and dedication on the part of the municipality for the definition of priorities and their budget allocation. The study of social priorities as indices, which make up social indicators of regional development, which is the ultimate objective of such regional plans, deserves independent treatment. Although it is not the only topic, transportation, media, education, health and, of course, work deserve a prominent place and the area must be equipped with all of this.

There are well-documented projects underway of this new human condition for new questions and answers.

The novel Suspicion by Jose Ángel Mañas is set in municipalities in the metropolitan area of ​​Madrid such as Navalcarnero or Tres Cantos.