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The Beijing Subway is the world's longest metro network at 815.2 kilometres (507 mi) and the Shanghai Metro has the highest annual ridership at 2.83 billion trips. [3] The New York City Subway has the greatest number of stations. As of 2024, the country with the most metro systems is China, with 54 in operation (excluding Hong Kong and Macao).
A city can be defined by the inhabitants of its demographic population, as by metropolitan area, or labour market area. UNICEF defines metropolitan area as follows: A formal local government area comprising the urban area as a whole and its primary commuter areas, typically formed around a city with a large concentration of people (i.e., a ...
Urban area Country Built-up land area (km 2) Population Urban population density (per km 2) Greater Los Angeles United States: 87,940 18,316,743 541.1 San Francisco-Oakland-San Jose (Bay Area) United States: 26,390 9,710,000 953 New York City (New York City Metropolitan Area) United States: 12,093 20,902,000 1,728 Boston–Providence United ...
This list ranks the top 150 U.S. cities (incorporated places) by 2024 land area. Total areas including water are also given, but when ranked by total area, a number of coastal cities appear disproportionately larger. San Francisco is an extreme example: water makes up nearly 69% of its total area of 232 square miles (601 km 2).
Dymaxion map of the world with the 30 largest countries and territories by area. This is a list of the world's countries and their dependencies by land, water, and total area, ranked by total area. The entries in this list include, but are not limited to, those in the ISO 3166-1 standard, which includes sovereign states and dependent territories.
[12] [13] The modern metropolitan statistical area was created in 1983 amid a large increase in the number of eligible markets, which grew from 172 in 1950 to 288 in 1980; [12] [14] the core based statistical area (CBSA) was introduced in 2000 and defined in 2003 with a minimum population of 10,000 required for micropolitan areas and 50,000 for ...
A satellite image of the Pearl River Delta area in China. A megalopolis (/ ˌ m ɛ ɡ ə ˈ l ɒ p ə l ɪ s /) or a supercity, [1] also called a megaregion, [2] is a group of metropolitan areas which are perceived as a continuous urban area through common systems of transport, economy, resources, ecology, and so on. [2]
Geographers had identified 25 such areas as of October 2005, [30] as compared with 19 megacities in 2004 and only nine in 1985. This increase has happened as the world's population moves towards the high (75–85%) urbanization levels of North America and Western Europe. Since the 2000s, the largest megacity has been the Greater Tokyo Area.