Mexico City (in Spanish: Ciuad de México, México, D.F. or simply México) is the capital city of Mexico. It is the most important economic, industrial and cultural center in the country, and the most populous city with 8,720,916 inhabitants in 2005. Greater Mexico City (Zona Metropolitana del Valle de México) incorporates 58 adjacent municipalities of Mexico State and 1 municipality of the state of Hidalgo, according to the most recent definition agreed upon by the federal and state governments. In 2006 Greater Mexico City had a population of 19.2 million, making it the largest metropolitan area in the western hemisphere and the secondlargest in the world. In 2005, it ranked the eighth in terms GDP (PPP) among urban agglomerations in the world. Along with São Paulo it is the only Beta global city with 8 points in Latin America.