There are two federally recognized Indian reservations in Colorado, both in the southwestern corner of the state: the Southern Ute Indian Reservation and the Ute Mountain Ute Reservation. They are the homelands of the two federally recognized tribes headquartered in Colorado, though many other tribal nations have historical ties to land inside the state’s borders.1Colorado Commission of Indian Affairs. Historic Tribes of Colorado
Southern Ute Indian Reservation
The Southern Ute Indian Reservation covers roughly 700,000 acres, running from the eastern edge of Montezuma County through La Plata County and into the middle of Archuleta County. Its southern boundary sits along the Colorado–New Mexico state line, and its northern edge roughly follows U.S. Highway 160.2Southern Ute Indian Tribe. Living in La Plata County The tribal government is headquartered in Ignacio.
Land ownership inside the reservation is not uniform. The reservation contains a checkerboard of tribal trust land, individual Indian allotments, non-Indian fee land created during the homesteading era, and Bureau of Reclamation and National Forest land. Not every parcel within the exterior boundaries is under tribal control, and non-Indian landowners live and operate businesses throughout the reservation.2Southern Ute Indian Tribe. Living in La Plata County
Ute Mountain Ute Reservation
The Ute Mountain Ute Reservation covers approximately 575,000 contiguous acres in Colorado’s extreme southwestern corner, with portions extending into New Mexico and Utah.3Colorado Commission of Indian Affairs. Ute Mountain Ute Tribe The tribal administration is based in Towaoc, and a second community sits at White Mesa, near Blanding, Utah.4Utah Division of Indian Affairs. Ute Mountain Ute The reservation is largely contiguous tribal land rather than a checkerboard. The tribe has approximately 2,134 enrolled members, living both on and off the reservation.
Tribal Sovereignty and Jurisdiction
Both tribes are sovereign governments with inherent authority over their land and citizens. Each sets its own form of government, determines its own membership, passes its own laws, and runs its own courts and law enforcement. The U.S. Constitution places Indian affairs under federal rather than state authority, so each tribe maintains a direct government-to-government relationship with the federal government, not with the State of Colorado.5National Conference of State Legislatures. An Issue of Sovereignty
Law enforcement follows from that structure. Under Public Law 280, Congress gave certain states criminal and civil jurisdiction over Indian lands, but Colorado was never one of those states.6Indian Affairs. What is Public Law 280 and Where Does It Apply? Crimes on either reservation generally fall under federal or tribal jurisdiction rather than state or county jurisdiction. State income and property taxes also do not apply to tribal citizens living on reservation land, though tribal citizens are subject to state taxes for activities off the reservation.7Native American Rights Fund. About Tribal Nations, Tribal Citizens, and the United States
Why the Reservations Are Only in the Southwest Corner
The two reservations are a small remnant of what the Ute people once held. Under an 1868 treaty, the United States set aside roughly the western third of Colorado for the “absolute and undisturbed use and occupation” of the Ute Nation.8Oklahoma State University. Treaty with the Ute, 1868 That territory shrank quickly. The 1873 Brunot Agreement took the San Juan Mountain mining region. After the 1879 Meeker Incident, a confrontation at the White River Agency, calls to remove all Utes from Colorado intensified. By 1881, the Tabeguache and White River bands were relocated to the Uintah Reservation in Utah, leaving only the Southern Ute and Weeminuche (now Ute Mountain Ute) bands on a narrow strip along Colorado’s southern border.9Southern Ute Indian Tribe. Chronology That strip is what remains today.
Visiting the Reservations
Both reservations are open to visitors, but each sets its own rules. The Ute Mountain Tribal Park, adjacent to Mesa Verde National Park, preserves Ancestral Puebloan cliff dwellings including Casa Colorado and Casa Blanca. Self-guided tours are not allowed; you must book a guided tour with a Ute guide to enter.10Ute Mountain Tribal Park. Ute Mountain Tribal Park
The Southern Ute Indian Tribe operates the Sky Ute Casino Resort in Ignacio, along with cultural events and facilities open to the public. The Ute Mountain Ute Tribe operates the Ute Mountain Casino Hotel in Towaoc. Before visiting either reservation, check with the tribal government about photography restrictions, access to specific areas, and any cultural events that may limit public access. Tribal law enforcement has full authority on reservation land, and visitors are expected to follow tribal rules the way they would follow local laws anywhere else.