Idaho / Counties by Population
Below are the 44 Idaho counties sorted by population from 1 to 44 . The population data are from the 2021 Population Estimates Program and 2020 American Community Survey. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!
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| Rank | County | Population |
|---|---|---|
| 1 | Ada County | 511,931 |
| 2 | Canyon County | 243,115 |
| 3 | Kootenai County | 179,789 |
| 4 | Bonneville County | 127,930 |
| 5 | Twin Falls County | 92,243 |
| 6 | Bannock County | 88,263 |
| 7 | Madison County | 53,881 |
| 8 | Bonner County | 49,491 |
| 9 | Bingham County | 48,876 |
| 10 | Nez Perce County | 42,454 |
| 11 | Latah County | 40,313 |
| 12 | Jefferson County | 32,202 |
| 13 | Elmore County | 28,827 |
| 14 | Payette County | 26,350 |
| 15 | Cassia County | 25,164 |
| 16 | Blaine County | 24,766 |
| 17 | Jerome County | 24,662 |
| 18 | Minidoka County | 21,955 |
| 19 | Gem County | 19,792 |
| 20 | Idaho County | 17,040 |
| 21 | Gooding County | 15,772 |
| 22 | Franklin County | 14,666 |
| 23 | Shoshone County | 13,612 |
| 24 | Fremont County | 13,592 |
| 25 | Boundary County | 12,561 |
| 26 | Owyhee County | 12,336 |
| 27 | Teton County | 12,267 |
| 28 | Valley County | 12,241 |
| 29 | Washington County | 10,898 |
| 30 | Benewah County | 9,931 |
| 31 | Clearwater County | 8,895 |
| 32 | Lemhi County | 8,162 |
| 33 | Boise County | 8,094 |
| 34 | Power County | 7,950 |
| 35 | Caribou County | 7,111 |
| 36 | Bear Lake County | 6,545 |
| 37 | Lincoln County | 5,282 |
| 38 | Adams County | 4,625 |
| 39 | Oneida County | 4,611 |
| 40 | Custer County | 4,428 |
| 41 | Lewis County | 3,715 |
| 42 | Butte County | 2,654 |
| 43 | Camas County | 1,139 |
| 44 | Clark County | 792 |
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United States Census Bureau. B01001 SEX BY AGE, 2020 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 17 March 2022. http://www.census.gov/. United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2021. U.S. Census Bureau, Population Division. Web. May 2022. http://www.census.gov/. |
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