Red Oak is a city in Ellis County, Texas, United States. It is part of the Dallas–Fort Worth metroplex. The population was 10,769 at the 2010 census, up from 4,301 at the 2000 census. The North Central Texas Council of Governments projects that number to grow to 63,329 by the year 2030, as it is on the verge of explosive suburban growth. Red Oak was one of the exterior locations for filming True Stories, directed by David Byrne of Talking Heads and released in 1986.

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.