American Falls is a city located in Power County Idaho. It is also the county seat of Power County. With a 2020 population of 4,291, it is the 37th largest city in Idaho and the 5218th largest city in the United States . American Falls is currently declining at a rate of -0.28% annually and its population has decreased by -3.72% since the most recent census, which recorded a population of 4,457 in 2010. American Falls reached it's highest population of 4,475 in 2010. Spanning over 2 miles, American Falls has a population density of 2,659 people per square mile.
The average household income in American Falls is $55,973 with a poverty rate of 7.30%. The median rental costs in recent years comes to $603 per month, and the median house value is $133,600. The median age in American Falls is 34.3 years, 38 years for males, and 33.1 years for females.