Miami ( my-AM-ee), officially the City of Miami, is a coastal metropolis and the seat of Miami-Dade County in South Florida. With a population of 442,241 as of the 2020 census, it is the second-most populous city in the U.S. state of Florida after Jacksonville. It is the core of the much larger Miami metropolitan area, which, with a population of 6.14 million, is the second-largest metropolitan region in the Southeast and ninth-largest metropolitan region in the United States. Miami has the third-largest skyline in the U.S. with over 300 high-rises, 58 of which exceed 491 ft (150 m).Miami is a major center and leader in finance, commerce, culture, arts, and international trade. Miami's metropolitan area is by far the largest urban economy in Florida, with a gross domestic product of $344.9 billion as of 2017. According to a 2018 UBS study of 77 world cities, Miami is the third-richest city in the U.S. and the third richest globally in purchasing power.