Dubuque County, IA

IA · Presidential Elections 1892–2024

R+8.6
2024 Margin
R+5.7%
2020→2024 Swing
R since 2016
Voting Streak
99K
Population

Dubuque County, IA (Iowa) voted R+8.6 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 28,224 votes (53.48%) to 23,705 (44.92%) for Harris.

This represents a R+5.7% swing toward Republicans compared to 2020. Dubuque County is classified as a lean Republican county. Dubuque County has voted Republican in every presidential election since 2016. The county has a population of approximately 99,030.

Quick Stats

2024 ResultR+8.6
2020→2024 SwingR+5.7%
Voting StreakR since 2016
Elections on Record34

Demographics

Population99,030
Median Age
39.1(US: 38.7)
College (BA+)
33.4%(US: 35.2%)
Median Income
$77,630(US: $80k)
White (non-Hisp)
88.9%(US: 57.6%)
Hispanic
3.3%(US: 19.1%)
Black
4.2%(US: 12.2%)
Asian
1.3%(US: 5.7%)
Homeownership
73.3%(US: 64.5%)
Poverty Rate
9.7%(US: 12.3%)
Veterans
5.9%(US: 6.2%)
Non-English (CVAP)
2.6%(US: 17.0%)
Source: Census ACS 5-Year (2020-2024)

Community Profile

Religious Composition

Source: Religion Census 2020
Catholic
43.8%(Major Center)
Mainline Protestant
6.5%
Evangelical
3.3%(Below Average)
LDS/Mormon
0.9%

Ancestry Groups

Source: Census ACS

Top reported ancestry groups (compared to national average).

German
44.6%Significant Hub(3.6x)
Irish
19.4%Above Average(2.1x)
English
6.7%
American Heritage
5.1%
Italian
2.1%
Mexican
2.1%
+ 2 more reported ancestry groups

Age Distribution

Median:39.1 yrs(US: 38.5)
Under 18
22.5%
18-29
9.8%↓
30-44
19.1%
45-64
29.2%↑
65+
19.3%↑
National average

Employment by Industry

Census ACS
ManufacturingRegional Strength
17.4%(1.8x US)
Retail Trade
11.7%
Educational Services
7.4%(0.9x US)
Professional & Technical
6.9%(0.6x US)
Construction
5.3%(0.8x US)
Healthcare & Social Services
4.4%
National average
+ 1 more sectors

Presidential Elections

Presidential Results

YearDemocratRepublicanMarginSwing
202444.9%(23,705)53.5%(28,224)R+8.6R+5.7
202047.6%(25,657)50.5%(27,214)R+2.9R+1.7
201645.5%(22,850)46.7%(23,460)R+1.2R+15.9
201256.5%(28,768)41.8%(21,280)D+14.7R+6.1
200859.7%(28,611)38.9%(18,651)D+20.8D+7.0
200456.5%(26,561)42.7%(20,100)D+13.7R+0.8
200055.4%(22,341)40.8%(16,462)D+14.6R+5.0
199654.8%(20,839)35.2%(13,391)D+19.6D+4.4
199247.8%(20,539)32.6%(14,007)D+15.2R+8.8
198861.7%(23,797)37.7%(14,530)D+24.0D+17.7

Source: Official state election returns via MIT Election Data + Science Lab

Presidential Margin Trend

Dubuque County, IA • 1892–2024

D+R++40+200-20-4018921900190819161924193219401948195619641972198019881996200420122020
Democratic margin
Republican margin

Senate Elections

Senate Results

YearDemocratRepublicanMarginSwing
202246.0%(18,020)53.0%(20,762)R+7.0R+5.9
202047.9%(25,433)49.1%(26,034)R+1.1D+15.5
201639.8%(19,291)56.4%(27,348)R+16.6R+21.9
201450.6%(18,439)45.4%(16,517)D+5.3D+25.3
201038.7%(12,941)58.7%(19,634)R+20.0R+57.8
200868.9%(32,086)31.1%(14,482)D+37.8D+67.0
200434.5%(15,837)63.7%(29,250)R+29.2R+51.4
200260.1%(19,383)38.0%(12,237)D+22.2D+49.1
199836.0%(9,824)63.0%(17,166)R+26.9R+40.8
199656.2%(21,190)42.3%(15,954)D+13.9D+51.1

Source: Official state election returns via MIT Election Data + Science Lab

Governor Elections

Governor Results

YearDemocratRepublicanMarginSwing
202240.6%(15,774)56.8%(22,035)R+16.1R+17.5
201849.4%(21,108)48.0%(20,532)D+1.3D+20.0
201439.4%(14,295)58.0%(21,049)R+18.6R+20.8
201050.1%(16,990)47.9%(16,237)D+2.2R+19.8
200660.4%(20,420)38.4%(12,989)D+22.0D+2.5
200258.6%(18,912)39.1%(12,612)D+19.5D+3.7
199857.4%(15,855)41.6%(11,486)D+15.8D+23.1
199445.8%(13,431)53.0%(15,565)R+7.3D+10.3
199040.9%(12,972)58.4%(18,541)R+17.6R+29.2
198655.8%(15,280)44.2%(12,099)D+11.6D+12.7

Source: Official state election returns via MIT Election Data + Science Lab

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