Ada County was Established in 1864.
Ada County is the most populous county in Idaho, with an estimated 392,365 people.
AnswerYes, Boise, Idaho is located in Ada County.
Benewah County Idaho was established in 1915.
Idaho County Idaho was established in 1864.
The Total area of Ada County Idaho is, 1,055 sq mi (2,732 sq km).
Ada County
As of the 2000 Census, the population of Ada County, Idaho is 300,904 people.
Bonneville County Idaho was established in 1911.
Butte County Idaho was established in 1917.
Boundary County Idaho was established in 1915.
Canyon County Idaho was established in 1892.
Caribou County Idaho was established in 1919.