| Idaho Population by County |
| year 2000 |
| Idaho Population by County |
| year 2000 |
| Area | Population |
|---|---|
| Ada County | 300,904 |
| Canyon County | 131,441 |
| Kootenai County | 108,685 |
| Bonneville County | 82,522 |
| Bannock County | 75,565 |
| Twin Falls County | 64,284 |
| Bingham County | 41,735 |
| Nez Perce County | 37,410 |
| Bonner County | 36,835 |
| Latah County | 34,935 |
| Elmore County | 29,130 |
| Madison County | 27,467 |
| Cassia County | 21,416 |
| Payette County | 20,578 |
| Minidoka County | 20,174 |
| Jefferson County | 19,155 |
| Blaine County | 18,991 |
| Jerome County | 18,342 |
| Idaho County | 15,511 |
| Gem County | 15,181 |
| Gooding County | 14,155 |
| Shoshone County | 13,771 |
| Fremont County | 11,819 |
| Franklin County | 11,329 |
| Owyhee County | 10,644 |
| Washington County | 9,977 |
| Boundary County | 9,871 |
| Benewah County | 9,171 |
| Clearwater County | 8,930 |
| Lemhi County | 7,806 |
| Valley County | 7,651 |
| Power County | 7,538 |
| Caribou County | 7,304 |
| Boise County | 6,670 |
| Bear Lake County | 6,411 |
| Teton County | 5,999 |
| Custer County | 4,342 |
| Oneida County | 4,125 |
| Lincoln County | 4,044 |
| Lewis County | 3,747 |
| Adams County | 3,476 |
| Butte County | 2,899 |
| Clark County | 1,022 |
| Camas County | 991 |