The city of Dallas is the third largest city in Texas and the ninth largest city in the United States of America. The economy of this city is primarily dependent on banking, commerce, telecommunications, computer technology, energy, and transportation, home to several Fortune 500 companies.
Dallas city is the largest economic center of the 12 county Dallas Fort Worth Arlington metropolitan area that according to the March 2010 U.S. Census Bureau release, had a population of roughly 6.5 million as of July 2009. The metropolitan area is the largest metropolitan area in the South and fourth largest metropolitan area in the United States.