Midlothian is a city in northwest Ellis County, Texas, United States. The city is 25 miles (40 km) southwest of Dallas. It is the hub for the cement industry in North Texas, as it is the home to three separate cement production facilities, as well as a steel mill. The population of Midlothian grew by 121% between 2000 and 2010, to a population of 18,037.

Ellis County is a county located in the U.S. state of Texas. As of 2020, its population was estimated to be 192,455. The county seat is Waxahachie. The county was founded in 1849 and organized the next year. It is named for Richard Ellis, president of the convention that produced the Texas Declaration of Independence. Ellis County is included in the Dallas–Fort Worth–Arlington metropolitan statistical area.