Forsyth is a city in and the county seat of Rosebud County, Montana, United States. The population was 1,647 at the 2020 census. Forsyth was established in 1876 as the first settlement on the Yellowst

U.S. Highway 12 is an east–west United States Numbered Highway in the state of Montana. It extends approximately 597.576 miles from the Idaho state line east to the North Dakota state line, the greate