The District was established on June 20, 1910, pending Arizona statehood on February 14, 1912.

[3] Court for the District is held at Phoenix, Tucson, Yuma and Flagstaff.

Magistrate courts, established to hear violations on federal lands, are additionally located in Grand Canyon National Park, Kingman, and Page.

[4] The divisions are as follows: As of January 7, 2025[update]: Chief judges have administrative responsibilities with respect to their district court.

The chief judge serves for a term of seven years, or until age 70, whichever occurs first.