Arlington is a city in the U.S. 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. 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.
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