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Dallas is the third-most-populous city in the state of Texas and the ninth-most-populous in the United States. The city is also large in geographic area as it covers 385 square miles (997 km²) and is the county seat of Dallas County. Dallas is one of 11 U.S. global cities as it is ranked "Gamma World City" by the Globalization and World Cities Study Group & Network.
As of the 2000 U.S. Census, Dallas had a total population of 1.1 million. The city is the main cultural and economic center of the Dallas–Fort Worth–Arlington metropolitan area, which is the fifth-largest metropolitan area in the U.S. with a population of 5.7 million in 12 counties.