Butte County, Idaho

Butte County
Experimental Breeder Reactor I
Official seal of Butte County
Map of Idaho highlighting Butte County
Location within the U.S. state of Idaho
Map of the United States highlighting 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 forBig 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 Decrease
 • Density1.3/sq mi (0.5/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd

Butte County is a rural county located in the U.S. state of Idaho. As of the 2020 census, the population was 2,574,[1] making it the third-least populous county in Idaho. Its county seat and largest city is Arco.[2] 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.[3]

  1. ^ "State & County QuickFacts".
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. ^ Idaho Atlas of Historical County Boundaries. Chicago: The Newberry Library. 2010. pp. 63–64. Archived from the original on June 19, 2018. Retrieved February 3, 2017.