akashic
1876–2024
Boise·Idaho

Boise has voted Republican in twenty-one straight presidential elections — R+25 in 2024.

Fast-growing Treasure Valley market where suburban expansion tests durable Republican margins

18762024·38 elections
ID
LatestR+25in 2024
TypologyIndustrial Catholic Metrocluster typology
Population928,5602024 ACS

Boise, Idaho: Industrial Catholic Metro market. In 2024, voted R+25%. Democratic peak: D+52 in 1896.

Key facts

2024 presidential margin
R+25MIT Election Lab
Political typology
Industrial Catholic MetroAkashic typology
Population
928,5602024 5-year
Median household income
$82,7382024 5-year
White (non-Hispanic)
79.5%2024 5-year
Black
1.1%2024 5-year
Hispanic / Latino
15.7%2024 5-year
Peak Democratic margin
D+52 in 1896MIT Election Lab
Peak Republican margin
R+48 in 1984MIT Election Lab
Boise
TrumpR+25
2024 presidential margin by county for Boise, IDA map of the constituent counties of Boise, ID, each outlined and filled by its 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic).Camas County, ID · R+54Payette County, ID · R+63Elmore County, ID · R+49Boise County, ID · R+53Owyhee County, ID · R+68Valley County, ID · R+19Adams County, ID · R+54Malheur County, OR · R+44Washington County, ID · R+62Ada County, ID · R+10Gem County, ID · R+66Canyon County, ID · R+47
How it voted
Share of the 2024 vote
Donald TrumpRepublican61.4%269,135
Kamala HarrisDemocratic35.9%157,473
OtherAll other candidates2.7%11,797
D+60
R+60
12 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 1876 to 2024. Most recent: −25.5% in 2024.flipped R · 1944−25.5%DR18762024
Presidential margin over time
YearMargin (D minus R)
1876No data
1880No data
1884No data
1888No data
1892−36.8%
1896+51.6%
1900+0.8%
1904−38.0%
1908−10.9%
1912+1.3%
1916+7.1%
1920−28.3%
1924−29.1%
1928−42.0%
1932+15.3%
1936+24.8%
1940+2.3%
1944−8.1%
1948−9.0%
1952−40.9%
1956−32.3%
1960−20.2%
1964−8.0%
1968−37.0%
1972−44.6%
1976−26.4%
1980−39.6%
1984−48.1%
1988−29.4%
1992−18.4%
1996−20.8%
2000−36.0%
2004−34.2%
2008−18.1%
2012−21.9%
2016−23.6%
2020−19.0%
2024−25.5%
DemocraticRepublican
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
R
−25.5%
157,473269,135438,405
R
−19.0%
163,054242,557418,679
R
−23.6%
103,938180,333324,313
R
−21.9%
112,324178,001299,634
R
−18.1%
119,249173,811301,006
R
−34.2%
85,175175,461263,858
R
−36.0%
62,329139,213213,403
R
−20.8%
69,423112,127205,391
R
−18.4%
52,97988,718194,285
R
−29.4%
54,596101,553159,658
R
−48.1%
40,110116,383158,555
R
−39.6%
42,966109,449167,791
R
−26.4%
45,30579,122127,866
R
−44.6%
26,10177,529115,298
R
−37.0%
25,70864,011103,412
R
−8.0%
46,88854,992101,888
R
−20.2%
41,93063,206105,136
R
−32.3%
31,38361,26192,644
R
−40.9%
27,63865,94993,735
R
−9.0%
31,39337,75671,024
R
−8.1%
30,25335,61166,306
D
+2.3%
36,67434,98971,887
D
+24.8%
35,16420,35259,623
D
+15.3%
29,23521,07053,229
R
−42.0%
12,03729,84042,359
R
−29.1%
6,87519,00141,685
R
−28.3%
14,24725,56140,040
D
+7.1%
17,98615,42235,870
O
+1.3%
8,9858,59129,823
R
−10.9%
10,69313,56826,270
R
−38.0%
5,16712,71019,856
D
+0.8%
7,5227,40015,421
D
+51.6%
6,7282,1178,933
O
−36.8%
2652,6356,439
No data
No data
No data
No data

Demographics

2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
17.8%
German
16.8%
Irish
10.3%
American
4.6%
Italian
3.4%
Scottish
3.0%
French
2.3%
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
Language at home
Population aged 5 and older
87.4%
speak English only
Spanish8.8%
Other Indo-European1.9%
Asian & Pacific Islander1.2%
Other languages0.7%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Other Christian
22.9%
Catholic & Orthodox
13.1%
Pentecostal & Holiness
3.8%
Methodist
2.3%
Mainline Protestant
1.6%
Baptist
0.9%
Non-Christian
0.7%
Source · 2020 US Religion Census. Remaining 54.7% of residents not counted as adherents by any reporting body.

The Boise media market anchors Idaho's most populous corridor, where rapid in-migration from California and the Pacific Northwest has introduced new demographic pressures into a region that has voted reliably Republican at the statewide level for decades.

Across the recorded series it reached a Democratic high of fifty-two points in 1896 and a Republican high of forty-eight points in 1984. Between 2020 and 2024 the market moved six points toward the Republican candidate; the 2024 margin was twenty-five points.

A population of 928,560, a 80% non-Hispanic-white share, and a median household income of $82,738 describe the market.

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.
Boise, Idaho. Akashic. https://akashic.app/dma/757/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did Boise, Idaho vote in 2024?
In 2024, Boise, Idaho voted Republican by 25.5 points (R+25), carried by the Republican candidate. Out of 438,405 votes cast, 157,473 went Democratic and 269,135 went Republican.
What is Boise, Idaho's political typology?
Akashic places Boise, Idaho in the "Industrial Catholic Metro" typology. 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 market has voted Democratic 6 times, Republican 26 times, and other 2 times.
When did Boise, Idaho last vote Democratic?
The most recent presidential election in which Boise, Idaho voted Democratic was 1940.
How many people live in Boise, Idaho?
Boise, Idaho has a population of 928,560 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boise, Idaho?
Median household income in Boise, Idaho is $82,738 — above the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Boise, Idaho?
Akashic tracks 38 presidential elections in Boise, Idaho from 1876 to 2024. Of those, 6 went Democratic and 26 went Republican. The market's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.