Ranking of Idaho Counties By Percentage of Population Aged 25 years and above with an Educational attainment of Some College or Associates Degree in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Idaho (aged 25 years and above) who had an educational attainment of Some College or Associates Degree was 35.50%. Among all Idaho counties, Lewis County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Some College or Associates Degree (43.84%), followed by Butte County (42.40%), and Jefferson County (42.17%).
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 Percentage of Population (Aged 25yrs+) with an Educational Attainment of Some College or Associates Degree in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Lewis County | 43.84 |
| 2 | Butte County | 42.40 |
| 3 | Jefferson County | 42.17 |
| 4 | Caribou County | 41.98 |
| 5 | Madison County | 41.89 |
| 6 | Washington County | 40.38 |
| 7 | Shoshone County | 40.15 |
| 8 | Kootenai County | 40.06 |
| 9 | Elmore County | 39.84 |
| 10 | Clearwater County | 39.28 |
| 11 | Fremont County | 38.72 |
| 12 | Bannock County | 38.66 |
| 13 | Lemhi County | 38.26 |
| 14 | Nez Perce County | 37.57 |
| 15 | Idaho County | 37.15 |
| 16 | Adams County | 36.65 |
| 17 | Bear Lake County | 36.50 |
| 18 | Cassia County | 36.26 |
| 19 | Bingham County | 36.20 |
| 20 | Boise County | 36.18 |
| 21 | Valley County | 36.08 |
| 22 | Twin Falls County | 36.07 |
| 23 | Bonneville County | 35.88 |
| 24 | Canyon County | 35.74 |
| 25 | Lincoln County | 35.56 |
| 26 | Bonner County | 34.94 |
| 27 | Boundary County | 34.17 |
| 28 | Ada County | 33.44 |
| 29 | Power County | 33.35 |
| 30 | Jerome County | 32.97 |
| 31 | Gem County | 32.16 |
| 32 | Latah County | 32.05 |
| 33 | Payette County | 31.83 |
| 34 | Oneida County | 31.81 |
| 35 | Minidoka County | 31.71 |
| 36 | Benewah County | 31.30 |
| 37 | Custer County | 30.84 |
| 38 | Owyhee County | 30.57 |
| 39 | Franklin County | 30.49 |
| 40 | Camas County | 29.67 |
| 41 | Teton County | 27.96 |
| 42 | Gooding County | 27.41 |
| 43 | Blaine County | 23.45 |
| 44 | Clark County | 19.04 |