Listing of counties in Idaho.

1. Ada County
2. Adams County
3. Bannock County
4. Bear Lake County
5. Benewah County
6. Bingham County
7. Blaine County
8. Boise County
9. Bonner County
10. Bonneville County
11. Boundary County
12. Butte County
13. Camas County
14. Canyon County
15. Caribou County
16. Cassia County
17. Clark County
18. Clearwater County
19. Custer County
20. Elmore County
21. Franklin County
22. Fremont County
23. Gem County
24. Gooding County
25. Idaho County
26. Jefferson County
27. Jerome County
28. Kootenai County
29. Latah County
30. Lemhi County
31. Lewis County
32. Lincoln County
33. Madison County
34. Minidoka County
35. Nez Perce County
36. Oneida County
37. Owyhee County
38. Payette County
39. Power County
40. Shoshone County
41. Teton County
42. Twin Falls County
43. Valley County
44. Washington County

de:Liste der Counties in Idaho ja:アイダホ州の郡一覧