American Falls
- County:
- Power County
- County Seat:
- Yes
- Area (mi²):
- 1.614
- State:
- Idaho
American Falls is a city located in Power County, Idaho. American Falls has a 2026 population of 4,863. It is also the county seat of Power County. American Falls is currently growing at a rate of 1.04% annually and its population has increased by 6.48% since the most recent census, which recorded a population of 4,567 in 2020.