Sumatra is an

unincorporated community An unincorporated area is a parcel of land that is not governed by a local general-purpose municipal corporation. (At p. 178.) They may be governed or serviced by an encompassing unit (such as a county) or another branch of the state (such as th ...

in far northwestern Rosebud County,

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

, 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), better known 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 from 1847 ...

. The town name was changed to Sumatra, after an Indonesian island, with the opening of the post office in 1910. Roger Youderian born in Sumatra (January 21, 1924 – January 8, 1956) was an American Christian missionary to Ecuador of

Armenian Armenian may refer to: * Something of, from, or related to Armenia, a country in the South Caucasus region of Eurasia * Armenians, the national people of Armenia, or people of Armenian descent ** Armenian diaspora, Armenian communities around the ...

descent who, along with four others, was killed while attempting to evangelize the Huaorani people through efforts known as Operation Auca.

Notes

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