2025

Counties in Idaho ranked by White Population

This list ranks the 44 counties in Idaho based on their 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 10, 2025

Top 5 counties with the largest White population in Idaho

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  • 1
    Ada County
    White population in Ada County is 469,122
    84.96% of Ada County population is White
  • 2
    Canyon County
    White population in Canyon County is 207,035
    76.10% of Canyon County population is White
  • 3
    Kootenai County
    White population in Kootenai County is 171,295
    88.45% of Kootenai County population is White
  • 4
    Bonneville County
    White population in Bonneville County is 117,268
    85.87% of Bonneville County population is White
  • 5
    Twin Falls County
    White population in Twin Falls County is 83,979
    82.40% of Twin Falls County population is White

List of 44 counties in Idaho by White Population

View Methodology
Rank by White Population
County
White Population
% of Total County Population
% of Total Idaho White Population
5 Year Rank Trend
1 Ada County 469,122 84.96% 27.07%
2 Canyon County 207,035 76.10% 11.95%
3 Kootenai County 171,295 88.45% 9.88%
4 Bonneville County 117,268 85.87% 6.77%
5 Twin Falls County 83,979 82.40% 4.85%
6 Bannock County 80,095 84.98% 4.62%
7 Madison County 50,203 88.34% 2.90%
8 47,986 90.87% 2.77%
9 42,606 79.99% 2.46%
10 39,667 88.63% 2.29%
11 38,319 88.88% 2.21%
12 30,286 87.76% 1.75%
13 25,336 76.08% 1.46%
14 24,475 84.00% 1.41%
15 21,939 74.47% 1.27%
16 21,593 81.47% 1.25%
17 21,405 75.08% 1.24%
18 18,979 87.95% 1.10%
19 18,832 75.41% 1.09%
20 16,489 91.93% 0.95%
21 14,150 91.67% 0.82%
22 13,417 75.28% 0.77%
23 13,083 90.90% 0.75%
24 12,908 89.00% 0.74%
25 12,001 95.25% 0.69%
26 11,827 89.25% 0.68%
27 10,838 82.38% 0.63%
28 10,173 74.98% 0.59%
29 9,968 84.26% 0.58%
30 8,899 85.56% 0.51%
31 8,513 89.59% 0.49%
32 7,936 92.39% 0.46%
33 7,654 88.12% 0.44%
34 6,804 92.17% 0.39%
35 6,316 94.24% 0.36%
36 6,172 68.83% 0.36%
37 4,598 94.01% 0.27%
38 4,511 92.10% 0.26%
39 4,405 72.07% 0.25%
40 4,205 90.16% 0.24%
41 3,408 84.69% 0.20%
42 2,623 92.75% 0.15%
43 1,068 80.85% 0.06%
44 574 68.99% 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 White population, using the most recent ACS data available.

How the Census Defines 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 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 White alone, while others identify as White along with another race (such as White and White).
  • Hispanic / Latino origin is reported separately from race, so someone can be both Hispanic and White .
  • We’ve used the “White alone or in combination” category unless noted otherwise, which gives a broader picture of the White population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as 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 White .
  2. % of Total Idaho White Population – This tells us how much of the entire U.S. 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 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 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 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.