Ranking of Idaho Counties By Population Aged 25 years and above with an Educational attainment of Bachelors or Higher in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of Idaho (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 345,282. Among all Idaho counties, Ada County had the highest population (aged 25 years and above) with an educational attainment of Bachelors or Higher (134,694), followed by Kootenai County (31,062), and Canyon County (29,420).
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.
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 Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Ada County | 134694 |
| 2 | Kootenai County | 31062 |
| 3 | Canyon County | 29420 |
| 4 | Bonneville County | 23172 |
| 5 | Bannock County | 15943 |
| 6 | Twin Falls County | 13384 |
| 7 | Latah County | 10123 |
| 8 | Bonner County | 9228 |
| 9 | Madison County | 7938 |
| 10 | Nez Perce County | 7415 |
| 11 | Blaine County | 7204 |
| 12 | Bingham County | 5623 |
| 13 | Jefferson County | 4412 |
| 14 | Teton County | 3703 |
| 15 | Elmore County | 3497 |
| 16 | Payette County | 3047 |
| 17 | Gem County | 2796 |
| 18 | Cassia County | 2722 |
| 19 | Idaho County | 2682 |
| 20 | Valley County | 2653 |
| 21 | Jerome County | 2005 |
| 22 | Fremont County | 1878 |
| 23 | Minidoka County | 1720 |
| 24 | Boise County | 1664 |
| 25 | Gooding County | 1531 |
| 26 | Boundary County | 1343 |
| 27 | Lemhi County | 1325 |
| 28 | Franklin County | 1301 |
| 29 | Washington County | 1291 |
| 30 | Clearwater County | 1242 |
| 31 | Benewah County | 1228 |
| 32 | Shoshone County | 1076 |
| 33 | Owyhee County | 1039 |
| 34 | Custer County | 895 |
| 35 | Caribou County | 843 |
| 36 | Bear Lake County | 784 |
| 37 | Power County | 676 |
| 38 | Oneida County | 660 |
| 39 | Adams County | 634 |
| 40 | Lewis County | 489 |
| 41 | Lincoln County | 393 |
| 42 | Butte County | 279 |
| 43 | Camas County | 168 |
| 44 | Clark County | 100 |