Yuma County is located in the southwestern corner of Arizona and is the state's 11th largest county by population. The county seat is Yuma.

Yuma County is governed by a five-member Board of Supervisors, who are elected by the citizens of the county. The Board of Supervisors is responsible for setting policy and budgeting for the county. The county is also served by a number of elected officials, including a Sheriff, County Attorney, Assessor, Recorder, Treasurer, and Clerk of the Superior Court.

The county is home to the Yuma Proving Ground, a U.S. Army installation that is the largest military installation in the world. The Yuma County Library District operates seven libraries throughout the county. The Yuma County Fair is held annually in October.

Yuma County is part of the Yuma Metropolitan Statistical Area, which includes all of Yuma County and La Paz County. The Yuma Metropolitan Statistical Area is the 15th largest metropolitan area in the United States.

For the most up-to-date and in-depth information, please check the public records links below.