Leadore is an incorporated small town in Lemhi County, Idaho, United States.

[5] The town of Leadore dates from 1910, when the Gilmore and Pittsburgh Railroad was constructed from Armstead, Montana, over Bannock Pass and into the Lemhi Valley.

This occurred because the original location for the train station in the town of Junction had to be altered when the owner of the land refused to sell.

Though the railroad ceased operating in 1939, Leadore has remained the largest town in the immediate area.

Idaho State Highway 28 (Railroad Street) passes through the center of Leadore, leading northwest 45 miles (72 km) to Salmon, the county seat, and southeast 90 miles (140 km) to Interstate 15 at Sage Junction.

According to the United States Census Bureau, Leadore has a total area of 0.31 square miles (0.80 km2), all of it land.

46.5% of all households were made up of individuals, and 20.9% had someone living alone who was 65 years of age or older.

There were 47.6% of families and 44.8% of the population living below the poverty line, including 50.0% of under eighteens and 28.6% of those over 64.