Cocopah Indian Reservation

As of the 2000 census a resident population of 1,025 persons, of whom 519 were solely of Native American heritage, lived on the 25.948 km2 (10.019 sq mi) Cocopah Indian Reservation, which is composed of three non-contiguous sections in Yuma County, Arizona, lying northwest, southwest and south of the city of Yuma, Arizona.

[3] Another Yuman group, the Quechan, lives in the adjacent Fort Yuma Indian Reservation.

The Cocopah Indian Reservation was created in 1917 by executive order of US President Woodrow Wilson.

[5] In 1985, the tribe received an additional 4,200 acres, including the northern portion of the reservation, through the Cocopah Land Acquisition Bill signed by President Ronald Reagan.

[6] Disputes over construction of the Mexico–United States border wall in tribal land have been ongoing since 2020.