Ranking of Idaho Counties By Population with Unclassified Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 418.15K people in Idaho with Unclassified ancestry. Among all Idaho counties, Ada County had the highest population with Unclassified ancestry (109.48K), followed by Canyon County (53.87K), and Kootenai County (44.40K).

The chart and table below shows the top 10 counties with high number of people with Unclassified 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 Unclassified Ancestry in 2021
Ada County
Canyon County
Kootenai County
Bonneville County
Twin Falls County
Bannock County
Madison County
Bonner County
Nez Perce County
Bingham County
Ranking of Idaho Counties By Population with Unclassified Ancestry in 2021
0 of 0
Rank County Population
1 Ada County 109484
2 Canyon County 53871
3 Kootenai County 44403
4 Bonneville County 26134
5 Twin Falls County 19496
6 Bannock County 19031
7 Madison County 12132
8 Bonner County 11983
9 Nez Perce County 11939
10 Bingham County 11575
11 Latah County 9634
12 Jefferson County 6889
13 Payette County 6726
14 Elmore County 6178
15 Jerome County 4497
16 Franklin County 4374
17 Cassia County 4246
18 Idaho County 3680
19 Minidoka County 3453
20 Gem County 3362
21 Teton County 3190
22 Shoshone County 3024
23 Owyhee County 2821
24 Boundary County 2809
25 Valley County 2683
26 Benewah County 2615
27 Blaine County 2610
28 Fremont County 2600
29 Washington County 2563
30 Clearwater County 2460
31 Gooding County 2308
32 Caribou County 2073
33 Boise County 2062
34 Lemhi County 1906
35 Bear Lake County 1719
36 Power County 1336
37 Oneida County 1195
38 Adams County 1130
39 Custer County 998
40 Lincoln County 972
41 Lewis County 962
42 Butte County 763
43 Camas County 139
44 Clark County 120