Quebec is an unincorporated community in Sweet Grass County, Montana, United States. Quebec is located along Interstate 90, southeast of Big Timber. Quebec was an agricultural community and a railroad stop en route to Big Timber. The town once boasted a general store and a blacksmith. The town progressively fell into decline after the depot w…Quebec is an unincorporated community in Sweet Grass County, Montana, United States. Quebec is located along Interstate 90, southeast of Big Timber. Quebec was an agricultural community and a railroad stop en route to Big Timber. The town once boasted a general store and a blacksmith. The town progressively fell into decline after the depot was closed down. There are no structures left remaining, and only a couple dirt roads. However, the railroad sign indicating its status as a former stop is still standing today.