Ranking of Idaho Counties By Population with European Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 55.40K people in Idaho with European ancestry. Among all Idaho counties, Ada County had the highest population with European ancestry (16.82K), followed by Kootenai County (5.19K), and Canyon County (5.14K).

The chart and table below shows the top 10 counties with high number of people with European ancestry.

You can see similar information for other states and for other ancestry groups in Idaho.

Data Source: US Census Bureau.
Ranking of Idaho Counties By Population with European Ancestry in 2021
Ada County
Kootenai County
Canyon County
Bonneville County
Bannock County
Madison County
Twin Falls County
Bonner County
Bingham County
Jefferson County
Ranking of Idaho Counties By Population with European Ancestry in 2021
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Rank County Population
1 Ada County 16822
2 Kootenai County 5188
3 Canyon County 5142
4 Bonneville County 4465
5 Bannock County 3102
6 Madison County 3045
7 Twin Falls County 2442
8 Bonner County 1862
9 Bingham County 1561
10 Jefferson County 1497
11 Latah County 1207
12 Nez Perce County 910
13 Gem County 811
14 Cassia County 645
15 Payette County 524
16 Boundary County 505
17 Minidoka County 420
18 Blaine County 416
19 Franklin County 343
20 Washington County 341
21 Jerome County 324
22 Elmore County 311
23 Valley County 286
24 Fremont County 277
24 Idaho County 277
25 Teton County 255
26 Benewah County 238
27 Shoshone County 220
28 Owyhee County 216
29 Butte County 204
30 Caribou County 191
31 Gooding County 173
32 Power County 171
33 Oneida County 151
34 Clearwater County 147
35 Adams County 146
36 Lemhi County 122
37 Boise County 99
38 Bear Lake County 94
39 Custer County 91
40 Lewis County 76
41 Lincoln County 71
42 Clark County 7
43 Camas County 5