Ranking of Idaho Counties By White Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)
Updated on September 5, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the Idaho White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 74,074. Among all Idaho counties, Ada County had the highest White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (12,184), followed by Canyon County (10,755), and Kootenai County (6,658).
The chart below shows the top 10 Idaho counties, and the table below shows the ranking of all Idaho counties.
You can see similar information for other educational attainments, and for other races and ethnicities.
You can also see similar information for other states and for the United States.
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Related Topics: Idaho ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Idaho Counties By White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Ada County | 12184 |
| 2 | Canyon County | 10755 |
| 3 | Kootenai County | 6658 |
| 4 | Twin Falls County | 5658 |
| 5 | Bonneville County | 3615 |
| 6 | Bannock County | 2675 |
| 7 | Bonner County | 2539 |
| 8 | Jerome County | 2323 |
| 9 | Minidoka County | 1975 |
| 10 | Nez Perce County | 1835 |
| 11 | Gooding County | 1673 |
| 12 | Cassia County | 1612 |
| 13 | Bingham County | 1477 |
| 14 | Payette County | 1284 |
| 15 | Gem County | 1154 |
| 16 | Owyhee County | 1115 |
| 17 | Jefferson County | 1055 |
| 18 | Shoshone County | 1039 |
| 19 | Elmore County | 1022 |
| 20 | Blaine County | 951 |
| 21 | Idaho County | 927 |
| 22 | Boundary County | 919 |
| 23 | Benewah County | 829 |
| 24 | Fremont County | 792 |
| 25 | Valley County | 772 |
| 26 | Latah County | 725 |
| 27 | Madison County | 668 |
| 28 | Power County | 586 |
| 29 | Washington County | 559 |
| 30 | Lemhi County | 551 |
| 31 | Franklin County | 527 |
| 32 | Clearwater County | 463 |
| 33 | Lincoln County | 452 |
| 34 | Caribou County | 401 |
| 35 | Custer County | 394 |
| 36 | Teton County | 293 |
| 37 | Boise County | 277 |
| 38 | Bear Lake County | 258 |
| 39 | Oneida County | 244 |
| 40 | Adams County | 229 |
| 41 | Lewis County | 196 |
| 42 | Butte County | 177 |
| 43 | Camas County | 140 |
| 44 | Clark County | 96 |