In those that do, there is debate as to whether the city serves a parasitic or generative function.
Relative primacy indicates the ratio of the primate city's population to that of the second largest in a country or region. Urban primacy can be measured as the share of a country's population that lives in the primate city. In geography, the phenomenon of excessive concentration of population and development of the main city of a country or a region (often to the detriment of other areas) is called urban primacy or urban macrocephaly. Primate cities also serve as targets for the majority of a country or region's internal migration. He defines a primate city as being "at least twice as large as the next largest city and more than twice as significant." Aside from size and population, a primate city will usually have precedence in all other aspects of its country's society such as economics, politics, culture, and education. The law of the primate city was first proposed by the geographer Mark Jefferson in 1939. A primate city distribution is a rank-size distribution that has one very large city with many much smaller cities and towns, and no intermediate-sized urban centers: a king effect, visible as an outlier on an otherwise linear graph, when the rest of the data fit a power law or stretched exponential function. Disproportionately largest city in its country or region Tallinn, the primate city of Estonia - it is five times larger than the country's second largest settlement.Ī primate city is a city that is the largest in its country, province, state, or region, and disproportionately larger than any others in the urban hierarchy.
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