Ranking of Idaho Counties By Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 106.42K people in Idaho with American ancestry. Among all Idaho counties, Ada County had the highest population with American ancestry (21.70K), followed by Canyon County (11.70K), and Bonneville County (10.18K).
The chart and table below shows the top 10 counties with high number of people with American ancestry.
You can see similar information for other states and for other ancestry groups in Idaho.
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Related Topics: Idaho ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Idaho Counties By Population with American Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Ada County | 21703 |
| 2 | Canyon County | 11704 |
| 3 | Bonneville County | 10179 |
| 4 | Kootenai County | 6776 |
| 5 | Twin Falls County | 6687 |
| 6 | Bannock County | 6145 |
| 7 | Bingham County | 4306 |
| 8 | Bonner County | 2993 |
| 9 | Madison County | 2829 |
| 10 | Jefferson County | 2509 |
| 11 | Cassia County | 2415 |
| 12 | Minidoka County | 2381 |
| 13 | Nez Perce County | 2155 |
| 14 | Gem County | 2117 |
| 15 | Jerome County | 1905 |
| 16 | Latah County | 1866 |
| 17 | Boundary County | 1644 |
| 17 | Payette County | 1644 |
| 18 | Elmore County | 1430 |
| 19 | Blaine County | 1390 |
| 20 | Franklin County | 1237 |
| 21 | Idaho County | 1228 |
| 22 | Gooding County | 822 |
| 23 | Fremont County | 715 |
| 24 | Caribou County | 682 |
| 25 | Washington County | 670 |
| 26 | Owyhee County | 581 |
| 27 | Shoshone County | 560 |
| 28 | Power County | 538 |
| 29 | Valley County | 521 |
| 30 | Clearwater County | 438 |
| 31 | Teton County | 437 |
| 32 | Benewah County | 433 |
| 33 | Lemhi County | 414 |
| 34 | Lincoln County | 386 |
| 35 | Boise County | 366 |
| 36 | Adams County | 332 |
| 37 | Oneida County | 300 |
| 38 | Bear Lake County | 274 |
| 39 | Butte County | 216 |
| 40 | Lewis County | 204 |
| 41 | Clark County | 112 |
| 42 | Custer County | 94 |
| 43 | Camas County | 82 |
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