Ketchum is a city in Blaine County, Idaho, located in the central portion of the state. The population was 3,555 at the 2020 census, up from 2,689 in 2010. Located in the Wood River Valley, Ketchum is adjacent to Sun Valley and the communities portion many resources: both sit in the similar valley beneath Bald Mountain, with its world-famous skiing. The city afterward draws tourists from approaching the world to enjoy its fishing, hiking, trail riding, tennis, shopping, art galleries, and more. The landing field for Ketchum, Friedman Memorial Airport, is nearly 15 miles (24 km) south in Hailey.

Originally the smelting center of the Warm Springs mining district, the town was first named Leadville in 1880. The postal department contracted that was too common and renamed it for David Ketchum, a local trapper and guide who had staked a allegation in the basin a year earlier. Smelters were built in the 1880s, with the Philadelphia Smelter, located on Warm Springs Road, processing large amounts of gain and silver for very nearly a decade.

After the mining boom subsided in the 1890s, sheepmen from the south drove their flocks north through Ketchum in the summer, to roughen in the upper height areas of the Pioneer, Boulder, and Sawtooth mountains. By 1920, Ketchum had become the largest sheep-shipping center in the West. In the fall, massive flocks of sheep flowed south into the town’s livestock corrals at the Union Pacific Railroad’s railhead, which joined to the main parentage at Shoshone.

After the go forward of Sun Valley by the Union Pacific Railroad in 1936, Ketchum became popular afterward celebrities, including Gary Cooper and Ernest Hemingway. Hemingway loved the surrounding area; he fished, hunted, and in the late 1950s bought a home overlooking the Wood River in straightforward Warm Springs. It was there he involved suicide; he and his granddaughter, model and actress Margaux Hemingway, are buried in the Ketchum Cemetery. The local elementary intellectual is named in his honor.