This is your welcome invitation to Sidney, Montana, an authentically unspoiled and captivating eastern Montana landscape—the perfect backdrop for outdoor adventure, sporting events, festivals and fairs, or to simply find a slower pace, away from the chaos of city life. Find a sense of freedom in this frontier community. Nestled in the fertile valley of the lower Yellowstone River, Sidney and Richland County offer a unique variety of landscapes. Rugged badlands offer a spectacular view to the east, while the river carves northward to the majestic confluence of the Yellowstone and Missouri rivers. In the western reaches of the county, open spaces and rolling hills leave little doubt that you are in Big Sky Country.