||It has been suggested that List of primate cities be merged into this article. (Discuss) Proposed since January 2016.|
A primate city (Latin: "prime, first rank") is the largest city in its country or region, disproportionately larger than any others in the urban hierarchy. 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 centres: 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. The 'law of the primate city' was first proposed by the geographer Mark Jefferson in 1939. He defines a primate city as being "at least twice as large as the next largest city and more than twice as significant." A primate city is number one in its country in most aspects, like politics, economy, media, culture and universities.
Not all countries have primate cities, but in those that do, the rest of the country depends on it for cultural, economic, political, and major transportation needs. On the other hand, the primate city depends on the rest of the country as paying consumers of the cultural, economic, political and other services produced in the area.
The presence of a primate city in a country may indicate an imbalance in development – usually a progressive core, and a lagging periphery, on which the city depends for labor and other resources. However, the urban structure is not directly dependent on a country's level of economic development.
Many of the primate cities are increasing their percentage of their country's population. This can be because the number of traditional workers have been reduced because of mechanization in the manufacturing industry, agriculture, and other blue-collar industries, which are generally located throughout all of the country. At the same time, the number of educated employees in service business such as politics, economy, culture, media, and higher education has been rising, and those sectors are often located in the capital where the power and money is concentrated.
Among the best known examples of primate cities are alpha world cities, including the two alpha++ world cities of London in the United Kingdom and New York City in the United States. In addition, Paris, Budapest, Dublin, Kuala Lumpur, Lima, Mexico City, Seoul, and Vienna have also been described as primate cities.
Bangkok, the capital of Thailand, has been called "the most primate city on Earth", being forty times larger than Thailand's second-largest city of Chiang Mai. Fong's examination of the primate city during the 2010 "Red Shirts" uprising in Thailand was notable. Taking the concept and applying it to the role that primate cities play if they are national capitals, his study noted that when primate cities like Bangkok function as national capitals, they are inherently vulnerable to insurrectionary dynamics by the subaltern, and the dispossessed. He cites the simple fact that most primate cities serving as national capitals contain major headquarters for the country. Thus, logistically, it is rather "efficient" for national targets to be contested since they are all located within one major urban environment.