Parent County: Bingham, Blaine, and Jefferson
Co. Seat: Cities
Arco: Butte City, Moore
Established February 6, 1917 with its county seat at Arco. It was named for the buttes that rise from the Snake
River plain and served as landmarks to trappers and pioneers who traveled through the area. The first white men in
the region were thought to be Donald Mackenzie and his Northwest Fur Company trappers in 1818.
County Courthouse, Arco, ID 83213-0737 Phone: (208) 527-3021 Fax: (208) 527-3295
IGS Publication: Fall 2004