Dubuque County, Iowa
AkashicDubuque County, IATrumpR+8.6
2024 precinct map of Dubuque CountyPrecinct-level 2024 presidential results for Dubuque County, with each precinct boundary colored by Democratic-vs-Republican margin, and gold where an independent or third-party candidate carried the precinct.
How it voted
Share of the 2024 vote
| Donald Trump ✓Republican | 53.5% | 28,224 |
|---|---|---|
| Kamala HarrisDemocratic | 44.9% | 23,705 |
| Robert F Kennedy Jr.We The People | 0.7% | 377 |
Harris +50Trump +50
34 precincts · 52,770 votes. Hover any precinct for its result.
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1892–2024.
38 presidential elections
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 44.9%Harris23,705 | 53.5%Trump28,224 | 0.7%Kennedy377 | 52,770 | ||
| R | 47.6%Biden25,657 | 50.5%Trump27,214 | 1.0%Jorgensen556 | 53,926 | ||
| R | 45.5%Clinton22,850 | 46.7%Trump23,460 | 4.0%Johnson2,013 | 50,221 | ||
| D | 56.5%Obama28,768 | 41.8%Romney21,280 | 0.9%Johnson438 | 50,894 | ||
| D | 59.7%Obama28,611 | 38.9%McCain18,651 | 1.4%Nader691 | 47,953 | ||
| D | 56.5%Kerry26,561 | 42.7%Bush20,100 | 0.8%Other382 | 47,043 | ||
| D | 55.4%Gore22,341 | 40.8%Bush16,462 | 2.4%Nader987 | 40,323 | ||
| D | 54.8%Clinton20,839 | 35.2%Dole13,391 | 8.7%Perot3,304 | 38,051 | ||
| D | 47.8%Clinton20,539 | 32.6%Bush14,007 | 19.1%Perot8,208 | 42,968 | ||
| D | 61.7%Dukakis23,797 | 37.7%Bush14,530 | 0.6%Larouche220 | 38,547 | ||
| D | 52.7%Mondale21,876 | 46.4%Reagan19,239 | 0.9%Larouche376 | 41,491 | ||
| D | 45.0%Carter18,689 | 44.9%Reagan18,649 | 10.1%Anderson4,201 | 41,539 | ||
| D | 52.6%Carter20,548 | 44.7%Ford17,459 | 2.7%McCarthy1,042 | 39,049 | ||
| D | 50.4%McGovern18,417 | 47.3%Nixon17,272 | 2.3%Schmitz832 | 36,521 | ||
| D | 53.5%Humphrey18,664 | 40.7%Nixon14,197 | 5.7%Wallace2,002 | 34,863 | ||
| D | 70.1%Johnson23,695 | 29.9%Goldwater10,104 | 0.1%Hass24 | 33,823 | ||
| D | 63.3%Kennedy22,007 | 36.6%Nixon12,740 | 0.1%Byrd19 | 34,766 | ||
| R | 42.2%Stevenson13,174 | 57.4%Eisenhower17,923 | 0.5%Andrews150 | 31,247 | ||
| R | 44.3%Stevenson14,542 | 55.0%Eisenhower18,075 | 0.7%Hallinan228 | 32,845 | ||
| D | 59.9%Truman15,521 | 39.0%Dewey10,111 | 1.1%Thurmond281 | 25,913 | ||
| D | 50.5%Roosevelt12,867 | 49.1%Dewey12,502 | 0.3%Thomas89 | 25,458 | ||
| R | 48.5%Roosevelt13,805 | 51.3%Willkie14,590 | 0.2%Thomas46 | 28,441 | ||
| D | 59.5%Roosevelt16,291 | 30.2%Landon8,275 | 10.3%Lemke2,812 | 27,378 | ||
| D | 71.2%Roosevelt19,210 | 25.0%Hoover6,747 | 3.9%Thomas1,042 | 26,999 | ||
| D | 66.4%Smith19,437 | 33.3%Hoover9,744 | 0.3%Thomas81 | 29,262 | ||
| O | 22.6%Davis5,718 | 32.8%Coolidge8,280 | 44.6%La Follette11,269 | 25,267 | ||
| R | 36.4%Cox7,636 | 59.2%Harding12,436 | 4.4%Debs928 | 21,000 | ||
| D | 49.6%Wilson6,063 | 47.2%Hughes5,772 | 3.2%Benson388 | 12,223 | ||
| D | 53.2%Wilson6,237 | 13.8%Taft1,620 | 33.0%Roosevelt3,867 | 11,724 | ||
| D | 56.1%Bryan6,645 | 39.7%Taft4,708 | 4.2%Debs502 | 11,855 | ||
| R | 43.3%Parker4,913 | 48.3%Roosevelt5,485 | 8.4%Debs955 | 11,353 | ||
| D | 57.5%Bryan6,655 | 41.1%McKinley4,752 | 1.4%Woolley157 | 11,564 | ||
| D | 54.7%Bryan6,510 | 43.7%McKinley5,203 | 1.6%Palmer185 | 11,898 | ||
| D | 65.0%Cleveland6,831 | 33.5%Harrison3,526 | 1.5%Weaver156 | 10,513 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +31.4% |
| 1896 | +11.0% |
| 1900 | +16.5% |
| 1904 | −5.0% |
| 1908 | +16.3% |
| 1912 | +39.4% |
| 1916 | +2.4% |
| 1920 | −22.9% |
| 1924 | −10.1% |
| 1928 | +33.1% |
| 1932 | +46.2% |
| 1936 | +29.3% |
| 1940 | −2.8% |
| 1944 | +1.4% |
| 1948 | +20.9% |
| 1952 | −10.8% |
| 1956 | −15.2% |
| 1960 | +26.7% |
| 1964 | +40.2% |
| 1968 | +12.8% |
| 1972 | +3.1% |
| 1976 | +7.9% |
| 1980 | +0.1% |
| 1984 | +6.4% |
| 1988 | +24.0% |
| 1992 | +15.2% |
| 1996 | +19.6% |
| 2000 | +14.6% |
| 2004 | +13.7% |
| 2008 | +20.8% |
| 2012 | +14.7% |
| 2016 | −1.2% |
| 2020 | −2.9% |
| 2024 | −8.6% |
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 64,903 | 27,811 | 13,750 | 23,328 | 14 |
| 2010 | 63,916 | 26,907 | 14,323 | 22,656 | 30 |
| 2012 | 67,553 | 26,992 | 15,878 | 24,592 | 91 |
| 2014 | 68,093 | 26,875 | 16,162 | 24,865 | 191 |
| 2016 | 69,564 | 28,054 | 17,438 | 23,723 | 349 |
| 2018 | 69,850 | 27,665 | 17,179 | 24,451 | 555 |
| 2020 | 72,152 | 29,007 | 20,904 | 21,633 | 608 |
| 2022 | 71,290 | 27,207 | 21,001 | 22,425 | 657 |
| 2024 | 71,627 | 25,123 | 22,507 | 23,243 | 754 |
Source: Iowa Secretary of State
Dubuque County, long anchored by its Catholic, union-influenced workforce in Iowa's oldest city, has moved steadily toward Republican margins over the past decade — a shift that mirrors broader realignment among working-class voters in the Midwest.
Across the recorded series it reached a Democratic high of 46.2 points in 1932 and a Republican high of 22.9 points in 1920. Between 2020 and 2024 the county moved 5.7 points toward the Republican candidate; the 2024 margin was 8.6 points.
A population of 99,030, a 88% non-Hispanic-white share, and a median household income of $77,630 describe the county. The county's voting pattern over the last decade is most similar to that of Mower County and Carlton County.
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Dubuque County, Iowa. Akashic. https://akashic.app/county/19061/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Dubuque County, Iowa vote in 2024?
In 2024, Dubuque County, Iowa voted Republican by 8.6 points (R+8.6), carried by the Republican candidate. Out of 52,770 votes cast, 23,705 went Democratic and 28,224 went Republican.
When did Dubuque County, Iowa last vote Democratic?
The most recent presidential election in which Dubuque County, Iowa voted Democratic was 2012.
How many people live in Dubuque County, Iowa?
Dubuque County, Iowa has a population of 99,030 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Dubuque County, Iowa?
Median household income in Dubuque County, Iowa is $77,630 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Dubuque County, Iowa?
Akashic tracks 38 presidential elections in Dubuque County, Iowa from 1876 to 2024. Of those, 25 went Democratic and 8 went Republican.