arlington,_texas | areatotal | 2582 (square kilometres) <sep> arlington is a city in the us state of texas, located in tarrant county it forms part of the mid-cities region of the dallas–fort worth–arlington metropolitan statistical area, and is a principal city of the metropolis and region the city had a population of 394,266 in 2020, making it the second-largest city in the county, after fort worth, and the third-largest city in the metropolitan area, after dallas and fort worth arlington is the 50th-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 texas has an area of 258.2 sqk.no information