Mexico City (Ciudad de México), abbreviated as CDMX; is the capital and largest city of Mexico and the most populous city in North America.Mexico City is one of the most important cultural and financial centres in the world. It is located in the Valley of Mexico (Valle de México), a large valley in the high plateau in the centre of Mexico. The city has 16 subdivisions known as boroughs or demarcaciones territoriales.
Greater Mexico City has a GDP of $411 billion in 2011, which makes it one of the most productive urban areas in the world. The city was responsible for generating 15.8% of Mexico's GDP, and the metropolitan area accounted for about 22% of the country's GDP.
Mexico's capital is both the oldest capital city in the Americas and was founded by indigenous people. The city was originally built on an island of Lake Texcoco by the Aztecs in 1325 as Tenochtitlan, which was almost completely destroyed in the 1521 Siege of Tenochtitlan and subsequently redesigned and rebuilt in accordance with the Spanish urban standards. In 1524, the municipality of Mexico City was established, known as México Tenochtitlán, and as of 1585, it was officially known as Ciudad de México (Mexico City). After independence from Spain was achieved, the federal district was created in 1824.
Mexico City is rated Alpha by the Globalization and World Cities Research Network (GaWC) which evaluates and ranks the relationships between world cities in the context of globalisation. Alpha level cities are linked to major economic states and regions and into the world economy.
Mexico City is the #44 city in the world according to the Global Power City Index (GPCI) which evaluates and ranks the major cities of the world according to their magnetism, or their comprehensive power to attract people, capital, and enterprises from around the world. It does so through measuring six key functions: Economy, Research and Development, Cultural Interaction, Liveability, Environment, and Accessibility.
Mexico City is the #70 city in the world according to the Global Financial Centres Index (GFCI) which evaluates and ranks the competitiveness of the major financial centres of the world according to a wide range of criteria – Human Capital, Business, Finance, Infrastructure and Reputation.
Mexico City is ranked #128 by the Global Urban Competitiveness Report (GUCR) which evaluates and ranks world cities in the context of economic competitiveness. Mexico City is rated C by the Global Urban Competitiveness Report (GUCR) which evaluates and ranks world cities in the context of economic competitiveness. C cities are international gateway cities. Mexico City has a population of over 9,209,944 people. Mexico City also forms part of the Greater Mexico City metropolitan area which has a population of over 21,804,515 people.