Idaho Counties Counties

| County | County_seat | License_Plate_Code | Year_founded | Population_2008_est_ | Population_Percentage | Area_sq_mi_ | Area_ |
|---|---|---|---|---|---|---|---|
| Bonneville | Idaho Falls | 8B | 1911 | 99135 | 06.51 % | 1901 | 2.17 % |
| Boundary | Bonners Ferry | 9B | 1915 | 10962 | 00.72 % | 1278 | 1.46 % |
| Butte | Arco | 10B | 1917 | 2751 | 00.18 % | 2234 | 2.55 % |
| Camas | Fairfield | 1C | 1917 | 1126 | 00.07 % | 1079 | 1.23 % |
| Canyon | Caldwell | 2C | 1891 | 183939 | 12.07 % | 604 | 0.69 % |
| Caribou | Soda Springs | 3C | 1919 | 6826 | 00.45 % | 1799 | 2.06 % |
| Cassia | Burley | 4C | 1879 | 21348 | 01.40 % | 2580 | 2.95 % |
| Clark | Dubois | 5C | 1919 | 910 | 00.06 % | 1765 | 2.02 % |
| Clearwater | Orofino | 6C | 1911 | 8176 | 00.54 % | 2488 | 2.84 % |
| Custer | Challis | 7C | 1881 | 4254 | 00.28 % | 4937 | 5.64 % |