Power County , Idaho

Power County: County in Idaho, United States


Power County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 7,817 and a population density of 2 people per km². After 9 years in 2019 county had an estimated population of 7,681 inhabitants. Its county seat is American Falls. The county was created 109 years ago in 1913.

Power County Quick Facts

Population : 7,681 (2019)
Country : United States of America
State : Idaho (United States)
Area : 3736 km2
Water as percent of area : 2.7%
Land as percent of area : 97.3%
Named for : American Falls Dam
Altitude : 5,646 feet / 1721 meters
Capital : American Falls
Establishment : January 01, 1913
Time Zone : America/Boise
Local time : 10:55:12 (21st May 2022)
Density : 2 Pop. per km² as of 2019
Population growth : -1.77% (2010-2019)
Power County locator map
Location of Power County on Idaho map.
Power County Courthouse image
Power County Courthouse
Power County Courthouse image


Power County is located at 42°41'37"N 112°50'26"W (42.6936900, -112.8406700). It has 3 neighbors: Bannock County, Blaine County and Oneida County.

Power County map

The largest city of Power County is American Falls with a population of 4,315. Other cities include and Rockland population 283. See all Power County cities & populated places.

Power County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Power County.

City Name Population Title
American Falls 4,315 City in Idaho
Rockland 283 City in Power County, Idaho, United States

Power County has 3 neighbours.

  • American Falls


According to census records, the population of Power County decreased by 1.77% in 9 years.

Year Population % Change Method
2010 7,817 - census
2011 7,780 -0.48% estimation process
2012 7,830 0.64% estimation process
2013 7,791 -0.5% estimation process
2014 7,729 -0.8% estimation process
2015 7,687 -0.55% estimation process
2016 7,681 -0.08% estimation process
2017 7,606 -0.99% estimation process
2018 7,700 1.22% estimation process
2019 7,681 -0.25% estimation process

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Idaho Other Counties (more counties)

County Name Population Title
Ada County 481,587 County in Idaho, United States
Canyon County 229,849 County in Idaho, United States
Boise 228,959 City in and state capital of Idaho, United States
Kootenai County 165,697 County in Idaho, United States
Bonneville County 119,062 County in Idaho, United States
Meridian 114,161 City in Ada County, Idaho, United States
Nampa 99,277 City in Canyon County, Idaho, United States
Bannock County 87,808 County in Idaho, United States
Twin Falls County 86,878 County in Idaho, United States
Idaho Falls 62,888 City in and the county seat of Bonneville County, Idaho, United States
Caldwell 58,481 City in and county seat of Canyon County, Idaho, United States
Pocatello 56,637 City in Idaho
Coeur d'Alene 52,414 City in Idaho, United States
Twin Falls 50,197 City in Twin Falls County, Idaho, United States
Bingham County 46,811 County in Idaho, United States
Bonner County 45,739 County in Idaho, United States