Welcome!

Yuma County AZGenWeb is a free genealogical site about the history of the Arizona county. It is a member of AZGenWeb, which is a member of USGenWeb®. We hope you find helpful clues for your research of Yuma County ancestors.

Are you familiar with the area? Do you have a family tree connection to the area? Please consider contributing your pieces of Yuma County family history. Corrections, updates, and additions to this site are always welcome. Our combined efforts can make this a great site for all who visit!

Co-County Coordinator: YOU? We are looking for a volunteer who has a sincere interest in the genealogy of Yuma County and is willing to help others along their family history journey. If you are interested, please don't hesitate to contact us.

County Coordinator: Norma Hass normahass01@gmail.com

COUNTY FORMATION

Yuma County was the one of four original Arizona Counties created 10 Nov 1864 by the 1st Arizona Territorial Legislature.

This Territory shall be divided into four counties, to be bounded and named as hereinafter provided.
First, the County of Pima, ...
Second, the County of Yuma, shall be bounded as follows: On the east by the line of 113 degrees 20 minutes west longitude, on the north by the middle of the main stream of the Santa Maria to its junction with Williams' Fork, thence by the middle of the main channel of said stream to its junction with the Colorado, on the west by the main channel of the Colorado river, and on the south by the Sonora line. The seat of justice whereof is hereby established at La Paz, and the County Commissioners are herby empowered to establish precincts in said county.
Third, the County of Mohave, ...
Fourth, the County of Yavapai, ...."

Yuma County lost its northern portion to the creation of LaPaz County in 1983.

The city of Yuma is the county seat.