Irving is a city located in the U.S. state of Texas within Dallas County. According to the 2010 U.S. Census, the city population was 216,290. Irving is within the Dallas–Plano–Irving metropolitan division of the Dallas–Fort Worth–Arlington metropolitan area, designated by the U.S. Census Bureau and colloquially referred to as the Dallas/Fort Worth Metroplex. Irving contains the Las Colinas area, which was one of the first master-planned developments in the United States and once the largest mixed-use development in the Southwest with a land area of more than 12,000 acres. Las Colinas includes the Mustangs at Las Colinas, which is the largest equestrian sculpture in the world. A 40-acre tract in Las Colinas is home to the Irving Convention Center at Las Colinas, completed in January 2011.