The Mid-Cities is a suburban region filling the 30-mile span between Dallas and Fort Worth. These communities include the cities of Arlington, Bedford, Colleyville, Coppell, Euless, Flower Mound, Grand Prairie, Grapevine, Haltom City, Hurst, Irving, Keller, Lewisville, Mansfield, North Richland Hills, Richland Hills, Southlake, and Watauga. From Wikipedia