Mayer is a census-designated place (CDP) in Yavapai County, Arizona, United States.

[2] A local legend holds that the English name came from a runaway boy with the last name of Mayer.

[citation needed] From May to June 1942, 245 Japanese Americans were confined at the Mayer Assembly Center, one of 17 temporary detention camps built to hold Japanese Americans removed from the West Coast after the U.S. entered World War II.

The 69 families were mostly from Maricopa County's Salt River Valley area, and lived in military-style barracks on the converted Civilian Conservation Corps camp for just under a month before being transferred to the more permanent and isolated internment camp at Poston, Arizona.

[3] The Goodwin Fire sparked on June 24, 2017, in the Bradshaw Mountains near the town of Mayer, which days later led to the evacuations of more than 9,000 residents.

[6] According to the United States Census Bureau, the CDP has a total area of 20.1 square miles (52 km2), all land.

[10] The former district operates Mayer High School in Spring Valley.