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 hav ...

in far northwestern Rosebud County,

Montana Montana () is a U.S. state, state in the Mountain states, Mountain West List of regions of the United States#Census Bureau-designated regions and divisions, division of the Western United States. It is bordered by Idaho to the west, North ...

, 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 Midwest and Northwest of the United States from 1847 until 1986. The company experienced ...

. 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