Hillside Colony is a Hutterite community[3] and census-designated place (CDP) in Toole County, Montana, United States.

It is in the northwest corner of the county, 5 miles (8 km) west of Interstate 15 at Sweet Grass and 1 mile (1.6 km) south of the Canadian border.

Hillside Colony was first listed as a CDP prior to the 2020 census.

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