| population | |
| Ada County | 494967 |
| Adams County | 4379 |
| Bannock County | 87018 |
| Bear Lake County | 5986 |
| Benewah County | 9430 |
| Bingham County | 47992 |
| Blaine County | 24272 |
| Boise County | 8065 |
| Bonner County | 47110 |
| Bonneville County | 123964 |
| Boundary County | 12056 |
| Butte County | 2646 |
| Camas County | 1130 |
| Canyon County | 231105 |
| Caribou County | 7027 |
| population | |
| Cassia County | 24655 |
| Clark County | 790 |
| Clearwater County | 8734 |
| Custer County | 4249 |
| Elmore County | 27448 |
| Franklin County | 14194 |
| Fremont County | 13388 |
| Gem County | 18703 |
| Gooding County | 15618 |
| Idaho County | 16541 |
| Jefferson County | 30891 |
| Jerome County | 24578 |
| Kootenai County | 171362 |
| Latah County | 39517 |
| Lemhi County | 7974 |
| population | |
| Lewis County | 3533 |
| Lincoln County | 5358 |
| Madison County | 52913 |
| Minidoka County | 21613 |
| Nez Perce County | 39265 |
| Oneida County | 4564 |
| Owyhee County | 12133 |
| Payette County | 24771 |
| Power County | 7878 |
| Shoshone County | 13169 |
| Teton County | 11630 |
| Twin Falls County | 77230 |
| Valley County | 11746 |
| Washington County | 10360 |
 | Challis Airport | ~ 3.65 km |
| Lemhi County Airport | ~ 75.24 km |
| Friedman Memorial Airport | ~ 110.79 km |
| Cascade Airport | ~ 139.97 km |
| McCall Municipal Airport | ~ 152.49 km |
| Dillon Airport | ~ 157.97 km |
| Dubois Municipal Airport | ~ 165.83 km |
| Gooding Municipal Airport | ~ 180.80 km |
| Boise Air Terminal/Gowen Field | ~ 188.87 km |
