Winston is a census-designated place (CDP) in Broadwater County, Montana, United States.

According to the United States Census Bureau, the CDP has a total area of 5.2 square miles (13.5 km2), all land.

There were 30 housing units at an average density of 8.9 per square mile (3.4/km2).

The racial makeup of the CDP was 95.89% White, 1.37% Native American, 1.37% Asian, and 1.37% from two or more races.

25.9% of all households were made up of individuals, and 14.8% had someone living alone who was 65 years of age or older.