The Idaho State Capitol in Boise is the home of the government of the U.S. state of Idaho. Although Lewiston briefly served as Idaho's capital from the formation of Idaho Territory in 1863, the territorial legislature moved it to Boise on December 24, 1864.

Boise is the capital and most populous city in the U.S. state of Idaho and is the county seat of Ada County. As of the 2020 census, there were 235,684 people residing in the city. On the Boise River in southwestern Idaho, it is 41 miles (66 km) east of the Oregon border and 110 miles (177 km) north of the Nevada border. The downtown area's elevation is 2,704 feet (824 m) above sea level.