Roscoe is a city in Nolan County in the U.S. state of Texas near the intersection of Interstate 20 and US Highway 84. The Union Pacific Railroad passes through the center of the city.

Nolan County is a county located in the west-central region of the U.S. state of Texas. As of the 2020 census, its population was 14,738. Its county seat is Sweetwater. The county was created in 1876 and organized in 1881. It is named for Philip Nolan, one of the first American traders to visit Texas. Nolan County comprises the Sweetwater micropolitan statistical area.