† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
5 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupBoise City, IDIdahoUnited States
English18.4%19.3%9.5%
German17.1%16.5%12.5%
Irish10.3%9.5%9.4%
American4.6%5.3%5.3%
Italian3.5%2.9%4.8%
Scottish3.0%3.2%1.3%
Norwegian2.7%2.4%—
Swedish1.7%1.9%—
Mexican11.9%11.0%11.3%
Spanish0.4%0.4%—
Puerto Rican0.4%0.3%1.8%
Spaniard0.4%0.4%—
Guatemalan0.3%0.2%0.5%
Colombian0.3%0.2%0.4%
Peruvian0.2%0.2%—
Salvadoran0.2%—0.7%
Asian Indian0.3%—1.4%
Chinese0.3%0.2%1.3%
Filipino0.2%—0.9%
Vietnamese0.2%—0.6%
Korean0.2%—0.4%
Aztec0.2%——
African American†0.6%—9.9%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Boise City, ID
Idaho
United States
Median age
37.6
37.6
39.1
Age 18–24
8.9%
9.8%
9.2%
Age 65 and older
16.2%
17.1%
17.2%
Household economy
Measure
Boise City, ID
Idaho
United States
Median household income
$85,629
$77,800
$84,427
Poverty rate
9.1%
10.7%
12.5%
Bachelor's degree or higher (25+)
36.7%
31.8%
35.6%
Languages at home
Measure
Boise City, ID
Idaho
United States
Speaks a non-English language at home
12.5%
11.0%
22.3%
Spanish
8.5%
8.1%
13.6%
Religious landscape
Measure
Boise City, ID
Idaho
United States
Catholic
12.9%
11.1%
18.6%
Evangelical Protestant
11.8%
12.4%
16.5%
Unclaimed / not counted
54.5%
50.2%
51.5%
Latter-day Saints
15.0%
22.1%
2.0%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Boise City, ID
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
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
−22.6%
DemocraticRepublican
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
37.4%Harris145,305
59.9%Trump233,049
2.7%
R+22.6
R+7.0
R+21.1
388,929
R
40.6%Biden150,243
56.2%Trump207,713
3.2%
R+15.5
D+4.7
R+20.0
369,630
R
33.5%Clinton95,157
53.7%Trump152,679
12.8%
R+20.2
R+0.6
R+22.3
284,079
R
38.6%Obama100,846
58.3%Romney152,312
3.1%
R+19.7
R+4.2
R+23.6
261,295
R
40.9%Obama106,733
56.4%McCain147,122
2.7%
R+15.5
D+16.4
R+22.8
260,784
R
33.4%Kerry75,221
65.3%Bush147,016
1.2%
R+31.9
D+1.9
R+29.5
224,979
R
30.2%Gore53,952
64.0%Bush114,455
5.8%
R+33.9
R+13.8
R+34.4
178,711
R
34.3%Clinton58,582
54.4%Dole92,770
11.3%
R+20.0
R+1.8
R+28.6
170,584
R
27.6%Clinton43,954
45.9%Bush73,056
26.5%
R+18.3
D+11.0
R+23.8
159,130
R
34.3%Dukakis44,264
63.5%Bush82,054
2.2%
R+29.2
D+18.4
R+21.5
129,216
R
25.5%Mondale31,904
73.1%Reagan91,683
1.4%
R+47.7
R+7.6
R+29.5
125,337
R
25.0%Carter33,359
65.1%Reagan86,737
9.9%
R+40.1
R+11.0
R+30.3
133,272
R
34.2%Carter34,050
63.2%Ford63,002
2.6%
R+29.0
D+15.9
R+31.1
99,690
R
22.6%McGovern20,105
67.5%Nixon60,071
9.9%
R+44.9
R+6.7
R+21.8
88,943
R
24.3%Humphrey19,196
62.5%Nixon49,329
13.2%
R+38.2
R+27.4
R+37.5
78,908
R
44.6%Johnson34,186
55.4%Goldwater42,479
0.0%
R+10.8
D+11.8
R+33.4
76,665
R
38.7%Kennedy30,235
61.3%Nixon47,952
0.0%
R+22.7
D+13.5
R+22.8
78,187
R
31.9%Stevenson21,734
68.1%Eisenhower46,353
0.0%
R+36.2
D+6.8
R+20.8
68,087
R
28.4%Stevenson19,714
71.4%Eisenhower49,516
0.1%
R+43.0
R+32.5
R+32.2
69,332
R
43.4%Truman22,284
53.8%Dewey27,663
2.8%
R+10.5
R+1.5
R+15.0
51,371
R
45.1%Roosevelt21,227
54.1%Dewey25,435
0.8%
R+8.9
R+10.7
R+16.4
47,021
D
50.8%Roosevelt25,523
49.0%Willkie24,619
0.3%
D+1.8
R+23.3
R+8.1
50,275
D
59.3%Roosevelt24,671
34.2%Landon14,238
6.5%
D+25.1
D+12.8
D+0.8
41,607
D
53.2%Roosevelt19,421
40.9%Hoover14,943
5.9%
D+12.3
D+57.6
R+5.5
36,506
R
26.8%Smith7,676
72.1%Hoover20,667
1.1%
R+45.3
R+13.6
R+27.9
28,654
R
14.5%Davis4,107
46.3%Coolidge13,064
39.2%
R+31.7
R+2.3
R+6.5
28,244
R
35.2%Cox9,268
64.7%Harding17,015
0.1%
R+29.4
R+35.9
R+3.3
26,312
D
49.7%Wilson12,498
43.3%Hughes10,870
7.0%
D+6.5
D+6.0
D+3.3
25,128
O
28.7%Wilson6,311
28.2%Taft6,206
43.1%
Roosevelt +14.5
D+12.0
R+19.1
22,011
R
40.7%Bryan8,016
52.3%Taft10,290
7.0%
R+11.5
D+29.5
R+2.0
19,691
R
24.5%Parker3,523
65.6%Roosevelt9,424
9.9%
R+41.1
R+39.1
R+21.4
14,367
R
47.2%Bryan5,122
49.2%McKinley5,335
3.6%
R+2.0
R+53.8
D+5.6
10,846
D
75.5%Bryan4,711
23.7%McKinley1,477
0.9%
D+51.8
D+94.7
D+57.9
6,242
O
0.0%Cleveland0
42.9%Harrison1,884
57.1%
Weaver +14.3
—
R+44.5
4,395
Congressional elections · 2 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2022
R
35.7%91,777
52.1%133,803
257,033
2020
R
40.7%149,435
55.6%204,018
367,055
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+37.4
vs
Presidential vote · 2024R+22.6
Registration leans Republican; the presidential vote runs 15 points more Republican.
DemocraticRepublicanUnaffiliatedOther parties
Voter registration in Boise City, ID
Year
Total registered
Democratic
Republican
Unaffiliated
Other
2018
356,140
55,654
162,344
133,211
4,931
2020
432,788
75,516
201,298
149,534
6,440
2022
439,995
71,096
229,902
131,963
7,034
2024
468,801
75,158
250,305
135,834
7,504
domestic migration
Who moves in and out
Net domestic migration over time
+14,366 net domestic migration · 2025
20112025
Net +159,455 over 2011–2025 · gain loss
Domestic migration in Boise City, ID in Boise City, ID: net domestic migration by year
Year
Net domestic migration
2011
+4,397
2012
+4,818
2013
+6,844
2014
+8,417
2015
+6,540
2016
+11,438
2017
+14,203
2018
+15,860
2019
+16,759
2021
+25,861
2022
+11,468
2023
+8,029
2024
+10,455
2025
+14,366
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 51.8 points in 1896 and a Republican high of 47.7 points in 1984. Between 2020 and 2024 the metro moved 7.0 points toward the Republican candidate; the 2024 margin was 22.6 points.
A population of 811,115, a 77% non-Hispanic-white share, and a median household income of $85,629 describe the metro. The metro's voting pattern over the last decade is most similar to that of Colorado Springs, CO and Ogden, UT.
Akashic
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
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.
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In 2024, Boise City, ID, Idaho voted Republican by 22.6 points (R+22.6), carried by the Republican candidate. Out of 388,929 votes cast, 145,305 went Democratic and 233,049 went Republican.
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 34 presidential elections in Boise City, ID, Idaho from 1892 to 2024. Of those, 5 went Democratic and 27 went Republican.
