Roberts is a census-designated place and unincorporated town in Carbon County, Montana, United States. As of the 2010 census it had a population of 361.Originally named Merritt, Roberts began as a Northern Pacific Railroad siding in 1893. The town was platted in 1902.A former settlement named Roberts was located at 45°21′28″N 109°10′08″W.Situated on U.S. Route 212, Roberts is about 12 miles from Red Lodge. Rock Creek flows south of town.