Greenlee County, Arizona
Greenlee County is a county in the southeastern part of the U.S. state of Arizona. As of the 2020 census, the population was 9,563, making it Arizona's least populous county. The county seat is Clifton.
The economy of Greenlee County is dominated by the Morenci Mine, the largest copper mining operation in North America, and one of the largest copper mines in the world. As of 2017, the mine complex, owned by Freeport-McMoRan, had about 3,300 employees.