Butte County, Idaho

Butte County
Location within the U.S. state of Idaho
Idaho's location within the U.S.
Coordinates: 43°43′N 113°10′W / 43.72°N 113.17°W / 43.72; -113.17
Country United States
State Idaho
FoundedFebruary 6, 1917
Named afterBig Southern Butte
SeatArco
Largest cityArco
Area
  Total
2,234 sq mi (5,790 km2)
  Land2,232 sq mi (5,780 km2)
  Water2.0 sq mi (5 km2)  0.1%
Population
 (2020)
  Total
2,574
  Density1.3/sq mi (0.5/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitehttps://buttecountyid.us/

Butte County is a rural county located in the U.S. state of Idaho. As of the 2020 census, the population was 2,574, making it the third-least populous county in Idaho. Its county seat and largest city is Arco. The county was established in 1917 from parts of Bingham, Blaine, and Jefferson counties. The county gained territory in the Clyde area from Custer County in 1937 to reach its present boundary.