Ketchum has been changing since 1936, when Union Pacific Railroad developed the Sun Valley Lodge on the former Brass Ranch, installed a few ski lifts on a nearby hill and opened for business.

Ketchum was a town in decline. The region’s lead and silver mines had been shut down along with the local smelter. In 1900, Ketchum was a wide spot in a dirt road with 301 residents, according to the U.S. Census Bureau.

By 1950, the population had more than doubled, reaching 757 residents in incorporated “Ketchum Village.”

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