Black Hawk County, Iowa
AkashicBlack Hawk County, IAHarrisD+1.2
2024 precinct map of Black Hawk CountyPrecinct-level 2024 presidential results for Black Hawk 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
| Kamala Harris ✓Democratic | 49.8% | 31,299 |
|---|---|---|
| Donald TrumpRepublican | 48.6% | 30,572 |
| Robert F Kennedy Jr.We The People | 0.7% | 443 |
Harris +50Trump +50
59 precincts · 62,906 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 |
|---|---|---|---|---|---|---|
| D | 49.8%Harris31,299 | 48.6%Trump30,572 | 0.7%Kennedy443 | 62,906 | ||
| D | 53.5%Biden35,647 | 44.5%Trump29,640 | 1.1%Jorgensen722 | 66,593 | ||
| D | 49.6%Clinton32,233 | 42.3%Trump27,476 | 3.6%Johnson2,368 | 65,007 | ||
| D | 59.3%Obama39,821 | 39.1%Romney26,235 | 0.8%Johnson540 | 67,141 | ||
| D | 60.5%Obama39,184 | 38.1%McCain24,662 | 1.4%Nader929 | 64,775 | ||
| D | 55.4%Kerry35,392 | 43.9%Bush28,046 | 0.7%Other469 | 63,907 | ||
| D | 54.7%Gore30,112 | 42.6%Bush23,468 | 2.1%Nader1,132 | 55,085 | ||
| D | 55.8%Clinton29,651 | 36.4%Dole19,322 | 6.8%Perot3,623 | 53,109 | ||
| D | 48.1%Clinton29,584 | 34.8%Bush21,398 | 16.5%Perot10,182 | 61,550 | ||
| D | 56.4%Dukakis31,657 | 42.9%Bush24,112 | 0.7%Larouche402 | 56,171 | ||
| R | 49.0%Mondale31,467 | 50.2%Reagan32,262 | 0.8%Larouche504 | 64,233 | ||
| R | 43.1%Carter27,443 | 46.5%Reagan29,627 | 10.4%Anderson6,652 | 63,722 | ||
| R | 47.8%Carter29,508 | 50.2%Ford30,994 | 2.0%McCarthy1,213 | 61,715 | ||
| R | 40.4%McGovern21,721 | 57.5%Nixon30,929 | 2.1%Schmitz1,132 | 53,782 | ||
| R | 42.6%Humphrey21,097 | 51.6%Nixon25,594 | 5.8%Wallace2,863 | 49,554 | ||
| D | 60.8%Johnson30,716 | 39.1%Goldwater19,744 | 0.1%Hass56 | 50,516 | ||
| R | 45.8%Kennedy24,078 | 54.1%Nixon28,435 | 0.1%Byrd38 | 52,551 | ||
| R | 41.9%Stevenson20,403 | 58.0%Eisenhower28,250 | 0.1%Andrews66 | 48,719 | ||
| R | 37.5%Stevenson17,360 | 62.0%Eisenhower28,671 | 0.4%Hallinan203 | 46,234 | ||
| D | 54.1%Truman19,603 | 44.3%Dewey16,041 | 1.6%Thurmond586 | 36,230 | ||
| D | 51.2%Roosevelt16,593 | 48.4%Dewey15,687 | 0.5%Thomas154 | 32,434 | ||
| D | 50.1%Roosevelt17,305 | 49.6%Willkie17,132 | 0.3%Thomas95 | 34,532 | ||
| D | 53.0%Roosevelt16,793 | 43.1%Landon13,666 | 3.9%Lemke1,222 | 31,681 | ||
| R | 49.3%Roosevelt14,660 | 49.5%Hoover14,746 | 1.2%Thomas359 | 29,765 | ||
| R | 30.3%Smith8,467 | 69.3%Hoover19,409 | 0.4%Thomas113 | 27,989 | ||
| R | 12.3%Davis2,981 | 65.3%Coolidge15,813 | 22.4%La Follette5,427 | 24,221 | ||
| R | 18.1%Cox4,000 | 76.6%Harding16,920 | 5.3%Debs1,181 | 22,101 | ||
| R | 37.6%Wilson4,270 | 59.3%Hughes6,742 | 3.1%Benson349 | 11,361 | ||
| O | 34.8%Wilson3,702 | 15.0%Taft1,601 | 50.2%Roosevelt5,346 | 10,649 | ||
| R | 34.3%Bryan3,127 | 59.7%Taft5,437 | 6.0%Debs548 | 9,112 | ||
| R | 23.8%Parker1,861 | 66.9%Roosevelt5,236 | 9.3%Debs730 | 7,827 | ||
| R | 32.3%Bryan2,512 | 64.4%McKinley5,010 | 3.3%Woolley259 | 7,781 | ||
| R | 30.8%Bryan2,167 | 66.0%McKinley4,643 | 3.1%Palmer220 | 7,030 | ||
| R | 41.7%Cleveland2,544 | 57.1%Harrison3,483 | 1.2%Weaver75 | 6,102 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −15.4% |
| 1896 | −35.2% |
| 1900 | −32.1% |
| 1904 | −43.1% |
| 1908 | −25.4% |
| 1912 | +19.7% |
| 1916 | −21.8% |
| 1920 | −58.5% |
| 1924 | −53.0% |
| 1928 | −39.1% |
| 1932 | −0.3% |
| 1936 | +9.9% |
| 1940 | +0.5% |
| 1944 | +2.8% |
| 1948 | +9.8% |
| 1952 | −24.5% |
| 1956 | −16.1% |
| 1960 | −8.3% |
| 1964 | +21.7% |
| 1968 | −9.1% |
| 1972 | −17.1% |
| 1976 | −2.4% |
| 1980 | −3.4% |
| 1984 | −1.2% |
| 1988 | +13.4% |
| 1992 | +13.3% |
| 1996 | +19.4% |
| 2000 | +12.1% |
| 2004 | +11.5% |
| 2008 | +22.4% |
| 2012 | +20.2% |
| 2016 | +7.3% |
| 2020 | +9.0% |
| 2024 | +1.2% |
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 86,854 | 32,177 | 21,150 | 33,472 | 55 |
| 2010 | 88,180 | 32,216 | 21,957 | 33,899 | 108 |
| 2012 | 90,672 | 32,285 | 22,535 | 35,698 | 154 |
| 2014 | 89,734 | 31,817 | 21,968 | 35,613 | 336 |
| 2016 | 89,254 | 32,745 | 23,130 | 32,765 | 614 |
| 2018 | 89,217 | 32,562 | 22,506 | 33,251 | 898 |
| 2020 | 90,023 | 35,800 | 24,211 | 29,203 | 809 |
| 2022 | 87,360 | 33,374 | 23,344 | 29,836 | 806 |
| 2024 | 86,704 | 31,319 | 23,841 | 30,630 | 914 |
Source: Iowa Secretary of State
Home to Waterloo and the University of Northern Iowa, Black Hawk County sits at the intersection of a mid-size industrial city and a college town — a combination that has kept its presidential margins razor-thin in recent cycles.
Across the recorded series it reached a Democratic high of 22.4 points in 2008 and a Republican high of 58.5 points in 1920. Between 2020 and 2024 the county moved 7.9 points toward the Republican candidate; the 2024 margin was 1.2 points.
A population of 131,049, a 78% non-Hispanic-white share, and a median household income of $66,417 describe the county. The county's voting pattern over the last decade is most similar to that of Ashland County and Guadalupe County.
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Black Hawk County, Iowa. Akashic. https://akashic.app/county/19013/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Cities & towns in Black Hawk County
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Frequently asked questions
How did Black Hawk County, Iowa vote in 2024?
In 2024, Black Hawk County, Iowa voted Democratic by 1.2 points (D+1.2), carried by the Democratic candidate. Out of 62,906 votes cast, 31,299 went Democratic and 30,572 went Republican.
When did Black Hawk County, Iowa last vote Republican?
The most recent presidential election in which Black Hawk County, Iowa voted Republican was 1984.
How many people live in Black Hawk County, Iowa?
Black Hawk County, Iowa has a population of 131,049 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Black Hawk County, Iowa?
Median household income in Black Hawk County, Iowa is $66,417 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Black Hawk County, Iowa?
Akashic tracks 38 presidential elections in Black Hawk County, Iowa from 1876 to 2024. Of those, 15 went Democratic and 18 went Republican.