Kilby Butte Colony's
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Kilby Butte Colony is a Hutterite community and census-designated place (CDP) in Musselshell County, Montana, United States. It is in the center of the county, on the south side of U.S. Route 12, 9 miles (14 km) east of Roundup, the county seat. It is on the north side of the Musselshell River, an east-flowing tributary of the Missouri River.