The Copper Mountains are a mountain range in Elko County, Nevada, United States. The range is contained mostly within the Mountain City Ranger District of the Humboldt-Toiyabe National Forest, though Coon Creek Peak is within the Jarbidge R…The Copper Mountains are a mountain range in Elko County, Nevada, United States. The range is contained mostly within the Mountain City Ranger District of the Humboldt-Toiyabe National Forest, though Coon Creek Peak is within the Jarbidge Ranger District.