akashic
1876–2024
Boise City, ID·Idaho

Boise City, ID has voted Republican in twenty-one straight presidential elections — R+23 in 2024.

Treasure Valley's fastest-growing metro tests Idaho's deep-red baseline

1876 — 2024·38 elections
ID
LatestR+23in 2024
TypologyIndustrial Catholic Metrocluster typology
Population811,1152024 ACS

Boise City, ID, Idaho: Industrial Catholic Metro metro. In 2024, voted R+23%. Democratic peak: D+52 in 1896.

Key facts

2024 presidential margin
R+23MIT Election Lab
Political typology
Industrial Catholic MetroAkashic typology
Population
811,1152024 5-year
Median household income
$85,6292024 5-year
White (non-Hispanic)
79.8%2024 5-year
Black
1.1%2024 5-year
Hispanic / Latino
15.0%2024 5-year
Peak Democratic margin
D+52 in 1896MIT Election Lab
Peak Republican margin
R+48 in 1984MIT Election Lab
2024 presidential election
Boise City, ID
TrumpR+23
—
2024 presidential margin by county for Boise City, ID, IDA map of the constituent counties of Boise City, ID, ID, each outlined and filled by its 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic).Owyhee County, ID · R+68Boise County, ID · R+53Ada County, ID · R+10Gem County, ID · R+66Canyon County, ID · R+47
How it voted
Share of the 2024 vote
Donald Trump ✓Republican59.9%232,949
Kamala HarrisDemocratic37.4%145,305
OtherAll other candidates2.7%10,572
D+60
R+60
5 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: −22.5% in 2024.flipped R · 1944−22.5%DR18762024
Presidential margin over time
YearMargin (D minus R)
1876No data
1880No data
1884No data
1888No data
1892−42.9%
1896+51.8%
1900−2.0%
1904−41.1%
1908−11.5%
1912+0.5%
1916+6.5%
1920−29.4%
1924−31.7%
1928−45.3%
1932+12.3%
1936+25.1%
1940+1.8%
1944−8.9%
1948−10.5%
1952−43.0%
1956−36.2%
1960−22.7%
1964−10.8%
1968−38.2%
1972−44.9%
1976−29.0%
1980−40.1%
1984−47.7%
1988−29.2%
1992−18.3%
1996−20.0%
2000−33.9%
2004−31.9%
2008−15.5%
2012−19.7%
2016−20.2%
2020−15.5%
2024−22.5%
DemocraticRepublican
38 presidential elections
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
R
−22.5%
145,305232,949388,826
R
−15.5%
150,243207,713369,630
R
−20.2%
95,157152,679284,079
R
−19.7%
100,846152,312261,295
R
−15.5%
106,733147,122260,784
R
−31.9%
75,221147,016224,979
R
−33.9%
53,952114,455178,711
R
−20.0%
58,58292,770170,584
R
−18.3%
43,95473,056159,130
R
−29.2%
44,26482,054129,216
R
−47.7%
31,90491,683125,337
R
−40.1%
33,35986,737133,272
R
−29.0%
34,05063,00299,690
R
−44.9%
20,10560,07188,943
R
−38.2%
19,19649,32978,908
R
−10.8%
34,18642,47976,665
R
−22.7%
30,23547,95278,187
R
−36.2%
21,73446,35368,087
R
−43.0%
19,71449,51669,332
R
−10.5%
22,28427,66351,371
R
−8.9%
21,22725,43547,021
D
+1.8%
25,52324,61950,275
D
+25.1%
24,67114,23841,607
D
+12.3%
19,42114,94336,506
R
−45.3%
7,67620,66728,654
R
−31.7%
4,10713,06428,244
R
−29.4%
9,26817,01526,312
D
+6.5%
12,49810,87025,128
O
+0.5%
6,3116,20622,011
R
−11.5%
8,01610,29019,691
R
−41.1%
3,5239,42414,367
R
−2.0%
5,1225,33510,846
D
+51.8%
4,7111,4776,242
O
−42.9%
01,8844,395
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Demographics

2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
18.4%
German
17.1%
Irish
10.3%
American
4.6%
Italian
3.5%
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
Age distribution by sex
Median age: 37.6 in this county, 39.1 nationally
Male
Age
Female
0.6%
85+
1.0%
2.3%
75–84
2.5%
4.7%
65–74
5.1%
5.7%
55–64
5.9%
6.3%
45–54
6.0%
7.1%
35–44
6.9%
7.0%
25–34
6.8%
4.6%
18–24
4.3%
9.2%
5–17
8.7%
2.9%
<5
2.7%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$85,629
Boise City, ID ranks near the middle of US counties.
Boise City, ID$85,629
Idaho$77,800
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
9.1%
Child poverty is below the national average.
Children under 1810.3%
Working age (18–64)8.7%
Seniors (65+)9.7%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
87.5%
speak English only
Spanish8.5%
Other Indo-European2.1%
Asian & Pacific Islander1.3%
Other languages0.7%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Other Christian
23.1%
Catholic & Orthodox
13.0%
Pentecostal & Holiness
3.8%
Methodist
2.5%
Mainline Protestant
1.6%
Baptist
0.8%
Non-Christian
0.6%
Source · 2020 US Religion Census. Remaining 54.5% of residents not counted as adherents by any reporting body.

Boise's rapid in-migration from California and the Pacific Northwest has introduced new demographic layers to a metro that still votes Republican by double digits, making it a bellwether for how growth reshapes reliably conservative Western cities.

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 metro moved seven points toward the Republican candidate; the 2024 margin was twenty-three points.

A population of 811,115, a 80% non-Hispanic-white share, and a median household income of $85,629 describe the metro.

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 City, ID, Idaho. Akashic. https://akashic.app/cbsa/14260/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did Boise City, ID, Idaho vote in 2024?
In 2024, Boise City, ID, Idaho voted Republican by 22.5 points (R+23), carried by the Republican candidate. Out of 388,826 votes cast, 145,305 went Democratic and 232,949 went Republican.
What is Boise City, ID, Idaho's political typology?
Akashic places Boise City, ID, 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 metro has voted Democratic 5 times, Republican 27 times, and other 2 times.
When did Boise City, ID, Idaho last vote Democratic?
The most recent presidential election in which Boise City, ID, Idaho voted Democratic was 1940.
How many people live in Boise City, ID, Idaho?
Boise City, ID, Idaho has a population of 811,115 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boise City, ID, Idaho?
Median household income in Boise City, ID, Idaho is $85,629 — above the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Boise City, ID, Idaho?
Akashic tracks 38 presidential elections in Boise City, ID, Idaho from 1876 to 2024. Of those, 5 went Democratic and 27 went Republican. The metro's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.