Sumatra is an

unincorporated community An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...

in far northwestern Rosebud County,

Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columbi ...

, United States. It consists of a church and a post office, with respective houses, surrounded by open ranch land. Sumatra was established in 1905 as a station stop, called Summit, on the

Milwaukee Road The Chicago, Milwaukee, St. Paul and Pacific Railroad (CMStP&P), often referred to as the "Milwaukee Road" , was a Class I railroad that operated in the Midwestern United States, Midwest and Pacific Northwest, Northwest of the United States fr ...

. The town name was changed to Sumatra, after an Indonesian island, with the opening of the post office in 1910.

Notes

Geography of Rosebud County, Montana Unincorporated communities in Montana {{RosebudCountyMT-geo-stub