Ralls is a city in Crosby County, Texas, United States. It was named after John Robinson Ralls, who, with the help of W.E. McLaughlin, laid out the townsite in July 1911. As of the 2010 census, it had a population of 1,944, down from 2,252 at the 2000 census. Ralls is surrounded by productive farmlands that primarily produce cotton and grains, with lesser amounts of soybean, sunflower seed, and vegetables.

Crosby County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 5,133. The county seat is Crosbyton. The county was founded in 1876 and later organized in 1886. Both the county and its seat are named for Stephen Crosby, a land commissioner in Texas.