Umatilla Indian Reservation

The Umatilla Indian Reservation is an Indian reservation in the Pacific Northwest of the United States. It was created by The Treaty of June 9, 1855 between the United States and members of the Walla, Cayuse, and Umatilla tribes. It lies in northeastern Oregon, east of Pendleton. The reservation is mostly in Umatilla County, with a very small part extending south into Union County. It is managed by the three Confederated Tribes of the Umatilla Indian Reservation.

Umatilla Indian Reservation is located in the United States
Umatilla Indian Reservation
Umatilla Indian Reservation
Location in the United States
Umatilla  Indian Reservation is located in Oregon
Umatilla  Indian Reservation
Indian Reservation
Location in Oregon
Map of the Umatilla Indian Reservation,
east of Pendleton

Located on the north side of the Blue Mountains, the reservation was established[when?] for two Sahaptin-speaking Native American tribes: the Umatilla and Walla Walla, and for the Cayuse, whose language, now extinct, was an isolate. All the tribes historically inhabited the Columbia Plateau region. The tribes share land and a governmental structure as part of their confederation.

Geography, demographics and headquartersEdit

The reservation has a land area of 271.047 square miles (702.01 km2) and a tribal population of 2,927 as of the 2000 census. In addition, some 300 Native Americans from other regional tribes and 1,500 non-natives live on the reservation.[1] The largest community is Mission, which is the site of the tribal headquarters as well as the Umatilla Agency of the Bureau of Indian Affairs.[2][3] Some BIA agency offices serve more than one federally recognized tribe, but the Umatilla Agency exclusively serves the Confederated Tribes of the Umatilla Indian Reservation (CTUIR).[4]


The tribes developed the Wildhorse Casino Resort on their reservation to generate revenues for their people. The casino is located near Interstate 84. In 2006 it started Cayuse Technologies, to provide software development and related services. These enterprises employ 1,000 persons and have markedly reduced unemployment.

Pendleton photographer Walter S. Bowman photographed tribe members in the early 20th century.[5][6][7] The CTUIR founded the Tamástslikt Cultural Institute, a museum that provides both historical and contemporary exhibits related to the confederated tribes, as well as exhibits of contemporary Native American arts and traditional craftwork.


Rattlesnake Pete from the Umatilla Indian Reservation

See alsoEdit

  • Henry Roe Cloud, Superintendent, Umatilla Indian Reservation
  • Shoni Schimmel, WNBA player born and raised on the reservation until leaving with her family while in high school


  1. ^ "Who We Are" (January 2013) Archived 2012-01-27 at the Wayback Machine, Confederated Tribes of the Umatilla Reservation
  2. ^ "Indian Agency Headquarters". Geographic Names Information System. United States Geological Survey. November 28, 2009. Retrieved 2009-12-23.
  3. ^ "Umatilla Agency". Retrieved 2009-12-23.
  4. ^ "Northwest Region - Tribes Served". Bureau of Indian Affairs. Retrieved 2009-12-23.
  5. ^ "Archived copy". Archived from the original on 2013-10-19. Retrieved 2020-03-29.CS1 maint: archived copy as title (link)
  6. ^ [1]
  7. ^ [2]

External linksEdit

Coordinates: 45°42′N 118°30′W / 45.7°N 118.5°W / 45.7; -118.5