Brockway is an unincorporated community in southern McCone County, Montana, United States located at 47°17′59″N 105°45′47″W / 47.29972°N 105.76306°W / 47.29972; -105.76306 near the Redwater River. At the 2000 census, the Brockway area had a population of approximately 140 people. Brockway is located near the junction of Montana Highway 200 and Montana Secondary Highway 253 along the recently designated Big Sky Back Country Byway, approximately 10 miles southwest of Circle, Montana. Brockway is home to the annual Brockway Dairy Day Rodeo.