Yuma County is located in the southwestern corner of Arizona, bordered by California to the west and Mexico to the south. It is known for its warm climate, with hot summers and mild winters, making it a popular destination for snowbirds. The county seat is Yuma, which is also the largest city in the area. The county has a diverse economy, with agriculture playing a significant role due to its fertile land and irrigation from the Colorado River. Yuma County is also home to several military installations, including Marine Corps Air Station Yuma, contributing to its economic stability and community services.