Pocatello ( (listen)) is the county seat and largest city of Bannock County, with a small portion on the Fort Hall Indian Reservation in neighboring Power County, in the southeastern part of the U.S. state of Idaho. It is the principal city of the Pocatello metropolitan area, which encompasses all of Bannock County. As of the 2010 census the population of Pocatello was 54,255.
Pocatello is the fifth-largest city in the state, just behind Idaho Falls (population of 56,813). In 2007, Pocatello was ranked twentieth on Forbes list of Best Small Places for Business and Careers. Pocatello is the home of Idaho State University and the manufacturing facility of ON Semiconductor. The city is at an elevation of 4,462 feet (1,360 m) above sea level and is served by the Pocatello Regional Airport.
Shoshone and Bannock Indigenous tribes inhabited southeastern Idaho for hundreds of years before the trek by Lewis and Clark across Idaho in 1805. Their reports of the many riches of the region attracted fur trappers and traders to southeastern Idaho. The city is named after Chief Pocatello, a 19th-century Shoshone leader.
Nathaniel Wyeth of Massachusetts established one of the first permanent settlements at Fort Hall in 1834, which is only a few miles northeast of Pocatello.