Power County, Idaho

Power County, Idaho
Power County Courthouse, American Falls
Location within the U.S. state of Idaho
Coordinates: 42°41′N 112°50′W / 42.69°N 112.84°W / 42.69; -112.84
Country United States
State Idaho
FoundedJanuary 30, 1913
Named afterpower plant at the American Falls Dam
SeatAmerican Falls
Largest cityAmerican Falls
Area
 • Total
1,443 sq mi (3,740 km2)
 • Land1,404 sq mi (3,640 km2)
 • Water38 sq mi (98 km2)  2.7%
Population
 (2020)
 • Total
7,878
 • Density5.611/sq mi (2.166/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.co.power.id.us

Power County is a county located in the U.S. state of Idaho. As of the 2020 census, the county had a population of 7,878. The county seat and largest city is American Falls. The county was created by the Idaho Legislature on January 30, 1913, by a partition of Cassia County. It is named for an early hydroelectric power plant (1902) at the American Falls.