Rock Springs is located in Rosebud County along with state Highway 59 north of Miles City. The town was named after Rock Springs Creek, which is fed by a spring that bubbles out of a rock outcrop. The post office was established there in 1911 and is still run in conjunction with a general store and gas station.
Wild roses grow all over Montana, a fact that led many early-day residents to choose the name “Rosebud” for rivers, towns, and counties. That led to some confusion along the way, particularly with the small town of Rosebud, located just east of Forsyth along Interstate 94. At various times in its history, the tiny town had different names, including Rosebud, Albright, and Beeman.