The Total area of Bingham County Idaho is, 41,735, (5,426 km sq).
Clark County is Idaho's smallest county based on population with a population of 982 as of the 2010 Census. Payette County is Idaho's smallest county based on area with 408 square miles.
As of the 2000 Census, the population of Custer County Idaho is, 4,342.
The Total area of Ada County Idaho is, 1,055 sq mi (2,732 sq km).
The Total area of Adams County Idaho is, 1,365 sq mi, (3,535 sq km)
The Total area of Bannock County Idaho is, 1,113 sq mi, (2,883 sq km)
The Total area of Benewah County Idaho is, 776 sq mi, (2,010 km sq)
The Total area of Boise County Idaho is, 1,902 sq mi,(4,926 km sq)
The Total area of Bonner County Idaho is, 1,738 sq mi, (4,501 km sq)
The Total area of Bonneville County Idaho is, 1,869 sq mi, (4,841 km sq)
The Total area of Boundary County Idaho is, 1,269 sq mi (3,287 km sq)
The total area of Butte County Idaho is, 2,233 sq mi, (5,783 km sq).