Idaho — All 44 Counties
Idaho has 44 counties with 237 communities and a combined population of 1,381,168.
| County | Towns | Population |
|---|---|---|
| Ada County | 8 | 448,509 |
| Canyon County | 8 | 185,866 |
| Kootenai County | 16 | 131,640 |
| Bonneville County | 8 | 94,821 |
| Bannock County | 9 | 79,906 |
| Twin Falls County | 8 | 67,642 |
| Madison County | 2 | 41,600 |
| Nez Perce County | 5 | 36,261 |
| Latah County | 11 | 30,877 |
| Bingham County | 10 | 24,987 |
| Elmore County | 4 | 21,164 |
| Blaine County | 6 | 18,489 |
| Bonner County | 12 | 17,285 |
| Payette County | 3 | 16,626 |
| Jerome County | 3 | 14,043 |
| Cassia County | 5 | 13,773 |
| Minidoka County | 5 | 11,805 |
| Shoshone County | 8 | 9,435 |
| Franklin County | 6 | 8,584 |
| Gem County | 2 | 8,514 |
| Gooding County | 4 | 8,121 |
| Jefferson County | 6 | 7,704 |
| Fremont County | 8 | 7,263 |
| Idaho County | 9 | 7,227 |
| Washington County | 3 | 6,470 |
| Teton County | 3 | 6,047 |
| Power County | 3 | 5,454 |
| Valley County | 5 | 5,412 |
| Owyhee County | 5 | 4,906 |
| Caribou County | 3 | 4,808 |
| Bear Lake County | 6 | 4,595 |
| Benewah County | 6 | 4,469 |
| Clearwater County | 4 | 4,234 |
| Boundary County | 2 | 4,035 |
| Lemhi County | 2 | 3,341 |
| Boise County | 8 | 3,207 |
| Lincoln County | 3 | 2,900 |
| Oneida County | 1 | 2,441 |
| Custer County | 5 | 1,861 |
| Lewis County | 4 | 1,411 |
| Butte County | 3 | 1,258 |
| Adams County | 2 | 1,135 |
| Clark County | 2 | 523 |
| Camas County | 1 | 519 |