Boise County

Also known as Boise County, Idaho, Boise County, ID

county in Idaho, United States

Key facts

Country: United States
State: Idaho
Founded: February 4, 1864
Named after: Boise River
Seat: Idaho City
Largest city: Horseshoe Bend
Total: 1,907 sq mi (4,940 km )
Land: 1,899 sq mi (4,920 km )
Water: 7.4 sq mi (19 km ) 0.4%
Estimate 2025: 8,545
Density: 3.7/sq mi (1.4/km )
Time zone: UTC−7 ( Mountain )
Summer dst: UTC−6 ( MDT )

Article

Boise County is a rural mountain county in the U.S. state of Idaho. As of the 2020 United States census, the population was 7,610. The county seat is historic Idaho City, which is connected through a series of paved and unpaved roads to Lowman, Centerville, Placerville, Pioneerville, Star Ranch, Crouch, Garden Valley, and Horseshoe Bend.

Boise County is part of the Boise metropolitan area. Despite the name, Boise itself is in nearby Ada County.