The City of Dallas is the third-largest city in the state of Texas and the ninth-largest city in the United States. The city covers 385 square miles and is the county seat of Dallas County. As of July 1, 2006, U.S. Census estimates put Dallas at a population of 1,250,280.The city is the main cultural and economic center of the 12-county Dallas–Fort Worth–Arlington metropolitan area-at 6 million people, it is the fourth-largest metropolitan area in the United States. Dallas is listed as a gamma world city by the Loughborough University Globalization and World Cities Study Group & Network. Dallas apartments for rent comparison page shows most up to date rent information on Dallas apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.