Established March 6, 1893 from part of Bingham County, with its county seat at Pocatello. Named for the Bannock Indians, the first inhabitants of the area, whose name was spelled Bannock by early settlers.
Background & Photos provided by Digital Atlas of Idaho, Idaho's Natural History Online, Idaho State University at http://imnh.isu.edu/digitalatlas/ (accessed: October 8, 2017).