Blackfoot is a city in Bingham County, Idaho, United States. The population was 11,899 at the 2010 census. The city is the county seat of Bingham County. Blackfoot boasts the largest potato industry in any one area, and is known as the "Potato Capital of the World." It is the site of the Idaho Potato Museum, and the home of the world's largest baked potato and potato chip. Blackfoot is also the location of the Eastern Idaho State Fair, which operates between Labor Day weekend and the following weekend.Blackfoot is the principal city of the Blackfoot, Idaho, Micropolitan Statistical Area, which includes Bingham County.