The land now known as the state of Colorado was once used by 15 different native American tribes. Today, there are two indian reservations in Colorado.
Colorado Indian Reservations
Reservation: Ute (Partly in New Mexico)
Tribes: Capote, Moache, Wiminuche Ute
Acres: 483,750
Established by: Treaties of Oct. 7, 1863 (XIII, 673), and Mar. 2, 1868 (xv, 619): act of Apr. 29, 1874 (XVIII, 36); Executive orders, Nov. 22, 1875, Aug. 17, 1876, Feb. 7, 1879, and Aug. 4, 1882; acts of June 15, 1880 (XXI, 199), July 28, 1882 (XXII, 178), May 14, 1884 (XXIII, 22), Aug. 15, 1894 (XXVIII, 337), and Feb. 20, 1895 (XXVII, 677). 65,450.33 acres were allotted to 332 Indians, and 360 acres reserved for the use of the Government; also 7,360.32 acres allotted to 39 Indians, and 523,079 acres opened to settlement by President’s proclamation, Apr. 13, 1899. The residue, 483,750 acres, retained as a reservation for the Wiminuche Ute.