American Falls is a city in and the county seat of Power County, Idaho, United States. The population was 4,457 at the 2010 census.HistoryAmerican Falls was a landmark waterfall on the Snake River, named after a party of American trappers whose boat went over the falls. The Wilson Price Hunt expedition in 1811 camped at the falls one night and the expedition of John C. Frémont was here in 1843. The Oregon Trail passed north of town, through the present-day reservoir. Power plants first sprang up at the falls in 1901. American Falls was the first town in the U.S. to be entirely rerelocated ; it was moved in 1925 to facilitate construction of the nearby American Falls Dam. The old townsite sits at the bottom of the reservoir, northwest of the present city. A larger dam was completed in 1978, downstream from the deteriorating 1927 structure, which was later demolished.Geography and climateAmerican Falls is located at, at an elevation of 4406ft.According to the United States Census Bureau, the city has a total area of 1.69sqmi, all of it land.Demographics2010 censusAs of the census of 2010, there were 4,457 people, 1,474 households, and 1,104 families residing in the city. The population density was 2637.3PD/sqmi. There were 1,612 housing units at an average density of 953.8/sqmi. The racial makeup of the city was 70.2% White, 0.4% African American, 0.9% Native American, 0.5% Asian, 0.1% Pacific Islander, 25.1% from other races, and 2.8% from two or more races. Hispanic or Latino of any race were 39.0% of the population.
