Dallas, city in north-central Texas, the third most populous in the state and the metropolis of the sprawling Dallas–Fort Worth urban area, known as the Metroplex. Dallas lies along the Trinity River near the junction of that river’s three forks, in a
Fort Worth, city, seat of Tarrant county, north-central Texas, U.S. It lies at the confluence of the Clear and West forks of the Trinity River and constitutes the western portion of the Dallas–Fort Worth urban area, known locally as the Metroplex. Dalla