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.

Ranking of Idaho Counties By Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
Ada County
Kootenai County
Canyon County
Bonneville County
Bannock County
Twin Falls County
Latah County
Bonner County
Madison County
Nez Perce County
Ranking of Idaho Counties By Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
0 of 0
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