Boise County Idaho
Idaho, a state in the United States, has the rural mountain county of Boise. There were 7,610 people living there as of the 2020 United States Census. The county seat is the historic Idaho City, which is connected to Lowman, Centerville, Placerville, Pioneerville, Star Ranch, Crouch, Garden Valley, and Horseshoe Bend via a network of paved and dirt roads.
The county was created on February 4th, 1864, with Idaho City serving as the county seat. It was given that name in honor of the Boise River, which French-Canadian explorers and trappers gave that name to in honor of the wide variety of trees that grew along its banks in the lower desert valley. One of four counties in Idaho that also existed in Washington Territory is the county in question. The majority of Idaho below latitude 114° 30', except the area west of the Payette River, was included in the county created by the Washington territorial government on January 12, 1863. They established Idaho City as the location of the county seat.
Most of that region was moved to Ada County in December 1864, leaving only minor pieces of Custer, Gem, Payette, Valley, and Washington counties along with the majority of today's Boise County. By 1866, the Boise River part of the present-day western boundary had been created. The following year, the present-day Ada County's common southern boundary was established. The most unstable border was in the north. The line changed many times between 1873 and 1887, moving farther north into Valley County, back south below Cascade, and then once more north to cover the North Fork of Payette River Basin. After Valley County and Gem County were established in 1918 and 1915, respectively, the county received its current border.