2025

Counties in Idaho ranked by Non-Hispanic White Population

This list ranks the 44 counties in Idaho based on their Non-Hispanic White population, as estimated by the United States Census Bureau. It also highlights population changes in these counties over the past five years.
Updated Feb 13, 2025

Top 5 counties with the largest Non-Hispanic White population in Idaho

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  • 1
    Ada County
    Non-Hispanic White population in Ada County is 414,759
    75.11% of Ada County population is Non-Hispanic White
  • 2
    Canyon County
    Non-Hispanic White population in Canyon County is 164,019
    60.29% of Canyon County population is Non-Hispanic White
  • 3
    Kootenai County
    Non-Hispanic White population in Kootenai County is 153,384
    79.20% of Kootenai County population is Non-Hispanic White
  • 4
    Bonneville County
    Non-Hispanic White population in Bonneville County is 102,599
    75.13% of Bonneville County population is Non-Hispanic White
  • 5
    Bannock County
    Non-Hispanic White population in Bannock County is 71,712
    76.09% of Bannock County population is Non-Hispanic White

List of 44 counties in Idaho by Non-Hispanic White Population

View Methodology
Rank by Non-Hispanic White Population
County
Non-Hispanic White Population
% of Total County Population
% of Total Idaho Non-Hispanic White Population
5 Year Rank Trend
1 Ada County 414,759 75.11% 27.61%
2 Canyon County 164,019 60.29% 10.92%
3 Kootenai County 153,384 79.20% 10.21%
4 Bonneville County 102,599 75.13% 6.83%
5 Bannock County 71,712 76.09% 4.77%
6 Twin Falls County 70,169 68.85% 4.67%
7 Madison County 45,271 79.66% 3.01%
8 44,580 84.42% 2.97%
9 36,579 81.73% 2.44%
10 36,318 68.18% 2.42%
11 34,506 80.04% 2.30%
12 27,745 80.40% 1.85%
13 20,492 61.54% 1.36%
14 19,990 68.61% 1.33%
15 17,876 67.45% 1.19%
16 16,679 77.29% 1.11%
17 16,420 57.60% 1.09%
18 15,385 85.77% 1.02%
19 14,261 48.40% 0.95%
20 13,208 85.57% 0.88%
21 13,084 52.39% 0.87%
22 12,126 84.26% 0.81%
23 11,440 78.87% 0.76%
24 11,403 90.51% 0.76%
25 11,040 83.31% 0.73%
26 10,084 56.58% 0.67%
27 9,652 73.37% 0.64%
28 8,535 72.15% 0.57%
29 8,461 62.36% 0.56%
30 8,346 80.24% 0.56%
31 7,890 83.04% 0.53%
32 7,488 87.17% 0.50%
33 6,848 78.84% 0.46%
34 6,462 87.54% 0.43%
35 6,101 91.03% 0.41%
36 4,886 54.49% 0.33%
37 4,318 88.28% 0.29%
38 4,084 83.38% 0.27%
39 3,944 84.56% 0.26%
40 3,339 54.63% 0.22%
41 3,000 74.55% 0.20%
42 2,344 82.89% 0.16%
43 880 66.62% 0.06%
44 460 55.29% 0.03%

Methodology

This ranking list is based on data from the American Community Survey (ACS) 5-Year Estimates, conducted by the U.S. Census Bureau. The ACS is one of the most reliable sources for understanding population trends across different locations, and it provides estimates for various racial and ethnic groups at city, county, state and all geography levels down to the Census block group.
This list ranks counties in Idaho by their Non-Hispanic White population, using the most recent ACS data available.

How the Census Defines Non-Hispanic White Population

The U.S. Census Bureau allows people to self-identify their race, meaning individuals can choose one or more racial categories when responding to the survey. In this ranking, we include everyone who identifies as Non-Hispanic White, whether alone or in combination with another race.
Here are a few important things to know about how race is reported:
  • Some people identify as Non-Hispanic White alone, while others identify as Non-Hispanic White along with another race (such as Non-Hispanic White and White).
  • Hispanic / Latino origin is reported separately from race, so someone can be both Hispanic and Non-Hispanic White .
  • We’ve used the “Non-Hispanic White alone or in combination” category unless noted otherwise, which gives a broader picture of the Non-Hispanic White population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as Non-Hispanic White alone or in combination in counties. To provide additional context, we’ve also included two key percentages:
  1. % of Total County Population – This shows what percentage of the total state population identifies as Non-Hispanic White .
  2. % of Total Idaho Non-Hispanic White Population – This tells us how much of the entire U.S. Non-Hispanic White population lives in that state.
To keep things simple, all population numbers have been rounded to the nearest whole number, and percentages are rounded to one decimal place. Because of rounding, some percentages may not add up to exactly 100%.

Things to Keep in Mind

Like all survey-based data, ACS estimates come with some limitations. Here are a few things to be aware of:
  • In places with very small Non-Hispanic White populations, the numbers may not be reported at all due to privacy protections or sampling variability in the survey.
  • Since the ACS is based on a sample, the numbers are estimates, not exact counts. That means they may slightly differ from other sources like the decennial U.S. Census.
  • Counties that don’t have any reported Non-Hispanic White population are not included in the ranking but are listed separately below for reference.
This ranking is meant to provide a clear, data-driven look at where Non-Hispanic White populations are most concentrated while keeping the numbers easy to understand.

Sources

U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.