what county does arlington belong to?
Arlington is a principal city in the U.S. state of Texas, located in Tarrant County. It is part of the Mid-Cities region of the DallasâFort WorthâArlington metropolitan area, approximately 12 miles east of downtown Fort Worth and 20 miles west of downtown Dallas. According to the U.S. Census Bureau's estimate, the city had a population of almost 379,577 at the end of 2013 making it the third-largest municipality in the metropolitan area. Arlington is the forty-eighth-most populous city ...