Arlington is a city in the U.S. state of Texas, located in Tarrant County. It is part of the Mid-Cities region of the Dallas–Fort Worth–Arlington metropolitan area, approximately 12 miles (19 km) east of downtown Fort Worth and 20 miles (32 km) west of downtown Dallas.
According to the U.S. Census Bureau’s estimate, the city had a population of 396,394 in 2017, making it the second-largest city in the county (after Fort Worth) and the third-largest in the metropolitan area. Arlington is the forty-eighth-most populous city in the United States, the seventh-most populous city in the state of Texas, and the largest city in the state that is not a county seat.
Arlington is home to the University of Texas at Arlington, a major urban research university, the Arlington Assembly plant used by General Motors, the Nuclear Regulatory Commission Region IV, Texas Health Resources, American Mensa, and D. R. Horton. Additionally, Arlington hosts the Texas Rangers at the Globe Life Park, the Dallas Cowboys at the AT&T Stadium, the Dallas Wings at the College Park Center, the International Bowling Campus (which houses the United States Bowling Congress, International Bowling Museum and the International Bowling Hall of Fame), and the theme parks Six Flags Over Texas (the original Six Flags) and Hurricane Harbor.