Bonneville County, Idaho: Industrial Catholic Metro county. In 2024, voted R+45%. Republican peak: R+66 in 1984.
Key facts
- 2024 presidential margin
- R+45MIT Election Lab
- Political typology
- Industrial Catholic MetroAkashic typology
- Population
- 129,5232024 5-year
- Median household income
- $79,0682024 5-year
- White (non-Hispanic)
- 84.3%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 14.5%2024 5-year
- Peak Democratic margin
- D+41 in 1936MIT Election Lab
- Peak Republican margin
- R+66 in 1984MIT Election Lab
- Most similar
- Midland County, TX · similarity 1.00
2024 results by precinct
2024 precinct map of Bonneville CountyPrecinct-level 2024 presidential results for Bonneville County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | No data |
| 1896 | No data |
| 1900 | No data |
| 1904 | No data |
| 1908 | No data |
| 1912 | −10.3% |
| 1916 | +14.5% |
| 1920 | −39.3% |
| 1924 | −45.6% |
| 1928 | −20.8% |
| 1932 | +21.0% |
| 1936 | +41.4% |
| 1940 | +19.1% |
| 1944 | +9.9% |
| 1948 | +8.8% |
| 1952 | −36.8% |
| 1956 | −32.3% |
| 1960 | −11.4% |
| 1964 | −5.4% |
| 1968 | −39.9% |
| 1972 | −41.6% |
| 1976 | −36.0% |
| 1980 | −61.7% |
| 1984 | −66.2% |
| 1988 | −51.7% |
| 1992 | −27.0% |
| 1996 | −32.9% |
| 2000 | −52.9% |
| 2004 | −55.8% |
| 2008 | −43.0% |
| 2012 | −51.8% |
| 2016 | −40.2% |
| 2020 | −43.6% |
| 2024 | −45.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 14,458 | 40,053 | 56,436 | ||
| R | 14,254 | 37,805 | 54,034 | ||
| R | 8,930 | 26,699 | 44,212 | ||
| R | 9,903 | 32,276 | 43,213 | ||
| R | 11,417 | 29,334 | 41,703 | ||
| R | 8,356 | 30,048 | 38,871 | ||
| R | 7,235 | 24,988 | 33,556 | ||
| R | 9,013 | 19,977 | 33,350 | ||
| R | 7,014 | 16,557 | 35,376 | ||
| R | 7,032 | 22,613 | 30,147 | ||
| R | 4,877 | 24,392 | 29,490 | ||
| R | 5,052 | 24,715 | 31,869 | ||
| R | 7,230 | 15,793 | 23,772 | ||
| R | 4,199 | 13,134 | 21,466 | ||
| R | 5,178 | 13,582 | 21,050 | ||
| R | 9,637 | 10,736 | 20,373 | ||
| R | 8,845 | 11,111 | 19,956 | ||
| R | 5,676 | 11,099 | 16,775 | ||
| R | 4,737 | 10,252 | 14,993 | ||
| D | 5,382 | 4,499 | 10,001 | ||
| D | 4,935 | 4,048 | 8,999 | ||
| D | 5,891 | 3,999 | 9,900 | ||
| D | 5,439 | 2,213 | 7,787 | ||
| D | 4,298 | 2,781 | 7,212 | ||
| R | 2,110 | 3,218 | 5,336 | ||
| R | 431 | 2,880 | 5,371 | ||
| R | 1,419 | 3,260 | 4,679 | ||
| D | 2,341 | 1,736 | 4,171 | ||
| R | 864 | 1,176 | 3,038 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
24.3%
German
13.3%
American
6.8%
Irish
6.1%
Scottish
2.9%
Italian
2.3%
French
1.6%
Sample size too small to break out by ancestry reliably.
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 33.6 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$79,068
Bonneville County ranks in the top 25% of US counties.
Bonneville County$79,068
Idaho$77,800
United States$80,734
Bonneville County ranks in the top 25% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
9.8%
Child poverty is below the national average.
Children under 1813.3%
Working age (18–64)8.3%
Seniors (65+)8.2%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
90.3%
speak English only
Spanish8.4%
Other Indo-European0.9%
Asian & Pacific Islander0.4%
Other languages0.1%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 34.6% of residents not counted as adherents by any reporting body.
Bonneville delivered an R+45.6 margin in 2024, consistent with its pattern as a heavily LDS, exurban county centered on Idaho Falls — a regional hub whose growth has not meaningfully shifted its partisan composition.
Its margins are typically close. The Democratic margin reached forty-one points in 1936; the Republican margin reached sixty-six points in 1984. Between 2020 and 2024 the county moved two points toward the Republican candidate; the 2024 margin was forty-five points.
Its demographics sit near national norms: a 84% non-Hispanic-white share, a median household income of $79,068, and a 10% poverty rate. The county's voting pattern over the last decade is most similar to that of Midland County and Washington County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Bonneville County, Idaho. Akashic. https://akashic.app/county/16019/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More industrial catholic metro counties
Frequently asked questions
How did Bonneville County, Idaho vote in 2024?
In 2024, Bonneville County, Idaho voted Republican by 45.4 points (R+45), carried by the Republican candidate. Out of 56,436 votes cast, 14,458 went Democratic and 40,053 went Republican.
What is Bonneville County, Idaho's political typology?
Akashic places Bonneville County, Idaho in the "Industrial Catholic Metro" typology — Mid-size industrial metros with Catholic ethnic roots — among the most competitive, swing-prone ground in the country. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 6 times, Republican 23 times, and other 0 times.
When did Bonneville County, Idaho last vote Democratic?
The most recent presidential election in which Bonneville County, Idaho voted Democratic was 1948.
How many people live in Bonneville County, Idaho?
Bonneville County, Idaho has a population of 129,523 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Bonneville County, Idaho?
Median household income in Bonneville County, Idaho is $79,068 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Bonneville County, Idaho?
Akashic tracks 38 presidential elections in Bonneville County, Idaho from 1876 to 2024. Of those, 6 went Democratic and 23 went Republican. The county's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.