The Silos is a census-designated place in Broadwater County, Montana, United States. The population was 506 at the 2010 census. The Silos is located along the west shore of Canyon Ferry Lake, a reservoir on the Missouri River. U.S. 12/287 runs through the CDP, leading 5 miles southeast to Townsend, the Broadwater County seat, and 28 miles n…The Silos is a census-designated place in Broadwater County, Montana, United States. The population was 506 at the 2010 census. The Silos is located along the west shore of Canyon Ferry Lake, a reservoir on the Missouri River. U.S. 12/287 runs through the CDP, leading 5 miles southeast to Townsend, the Broadwater County seat, and 28 miles northwest to Helena, the state capital.