The most populated county in Idaho is Ada County, with a population of more than 390,000.
Ada County is the most populous county in Idaho, with an estimated 392,365 people.
Ada County is Idaho's largest county based on population with a population of 392,365 as of the 2010 Census.
Ada County
Ada county. it has boise in it.
The largest county in Idaho is Idaho County, it is 8,485 sq mi, the county seat is Grangeville, and it is located in central Idaho.
As of the 2000 Census, the population of Idaho County Idaho is, 15,511.
As of the 2000 Census, the population of Bonner County Idaho is 36,835.
As of the 2000 Census the population of Bannock County, Idaho is 75,565.
As of the 2000 Census, the population of Bingham County Idaho is 41,735.
As of the 2000 Census, the population of Boundary County Idaho is, 9,871.
As of the 2000 Census, the population of Butte County Idaho is, 2,899.
As of the 2000 Census, the population of Camas County Idaho is, 991.