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 is self-designated the "Potato Capital of the World", because it claims to have the largest potato industry in the world. It is home to the Idaho Potato Museum (a museum and gift shop that displays and explains the history of Idaho's potato industry), which is home to the world's largest baked potato and potato chip.