Power County, Idaho

Power County
Power County Courthouse, American Falls
Location within the U.S. state of Idaho
Idaho's location within the U.S.
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 (100 km2)  2.7%
Population
 (2020)
  Total
7,878
  Density5.5/sq mi (2.1/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.