Butte County is named for the buttes rising from the Snake River Plain.
Surrounding County Courthouses:
N – Custer County, Lemhi County and Clark County
E – Clark County, Jefferson County and Bingham County
S – Bingham County and Blaine County
W – Custer County
Created: February 6, 1917 
County Seat:
Arco 1917 – present
County Courthouse Annex – Arco
Location: 326 West Grand Avenue / North Water Street
Built: 1946 – 1947
Style: Federal
Architect: Unknown
Contractor: Unknown
Description: The building faces southeast and is a two story red colored brick and concrete structure. The building is located on landscaped grounds in the center of Arco to the siuthwest of the courthouse. The building has a raised basement and the southeast section extends to the street with a glass entrance. Two narrow horizontal belts run below the flat roof line. The building was the Veterans Memorial Building until converted to the courthouse and named as the Butte County Memorial Annex. The County District Court courtroom is located on the northwest side of the first story. The building houses the County District Court and County Magistrate Court of the 7th Judicial District.
County Courthouse – Arco
Location: 256 West Grand Avenue / North Idaho Street
Built: 1919 – 1920
Style: Federal
Architect: Utah Construction Canal Limited
Contractor: Utah Construction Canal Limited
Description: The building faces southeast and is a one story red colored brick and wood structure. The building is located on landscaped grounds in the center of Arco. The roof is hipped. The building is the administration building. The court now sits in the Butte County Memorial Annex located to the southwest.
Note: The County purchased the building from the Utah Construction Canal Limited on May 1, 1934 at a cost of $1166. In 1941 a contract was awarded to Martin Hanni to paint the building at a cost of $265.
See: The 7th Judicial District includes Bingham County, Bonneville County, Clark County, Custer County, Fremont County, Jefferson County, Lemhi County, Madison County and Teton County.
History: The county was created in 1917 and Arco was selected as the county seat. The county used rented premises and in 1934 purchased the first and present courthouse which had been constructed in 1919 to 1920. The court moved to the Butte County Memorial Annex.
County Courthouse Annex – Arco
County District Court courtroom
County Courthouse – Arco
Craters of the Moon National Monument
Photos taken 1970, 2011 and 2015