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Established on January 30, 1913 with its county seat at American Falls. Named for the American Falls Power Plant. American Falls was the first settlement in the county and was a frequent camping place on the Oregon Trail. It became a railroad station when the Oregon Short Line was built across southern Idaho.
County Seat: American Falls
Land Area: 1,442 square miles.
County Clerk 543 Bannock American Falls, ID 83211-1200 Phone: (208) 226-7611 Fax: (208) 226-7612
