Willow Creek is an unincorporated community and census-designated place (CDP) in Gallatin County, Montana, United States. The population was 210 at the 2010 census. It is part of the Bozeman, MT Micropolitan Statistical Area.
The settlement here began in 1864 and soon grew due to a mining boom in nearby Norwegian Gulch. The Northern Pacific Railroad arrived at Willow Creek in 1883.
Willow Creek is located in western Gallatin County at 45°49′38″N 111°38′7″W (45.827110, -111.635392), where the valley of Willow Creek (the stream) enters the valley of the Jefferson River. It is 6 miles (10 km) southwest of Three Forks and 7 miles (11 km) southwest of Interstate 90.
According to the United States Census Bureau, the CDP has a total area of 2.73 square miles (7.08 km2), all land.