Mahaska County, Iowa
AkashicMahaska County, IATrumpR+51.4
2024 precinct map of Mahaska CountyPrecinct-level 2024 presidential results for Mahaska 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 | 75.0% | 8,207 |
|---|---|---|
| Kamala HarrisDemocratic | 23.5% | 2,577 |
| Robert F Kennedy Jr.We The People | 0.7% | 82 |
Harris +50Trump +50
9 precincts · 10,946 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 | 23.5%Harris2,577 | 75.0%Trump8,207 | 0.7%Kennedy82 | 10,946 | ||
| R | 25.4%Biden2,894 | 72.8%Trump8,297 | 1.2%Jorgensen134 | 11,404 | ||
| R | 24.4%Clinton2,619 | 69.3%Trump7,432 | 3.0%Johnson318 | 10,723 | ||
| R | 38.7%Obama4,213 | 59.2%Romney6,448 | 0.8%Johnson82 | 10,883 | ||
| R | 40.8%Obama4,464 | 57.4%McCain6,271 | 1.8%Nader197 | 10,932 | ||
| R | 35.3%Kerry3,790 | 63.9%Bush6,858 | 0.7%Other80 | 10,728 | ||
| R | 35.3%Gore3,370 | 62.6%Bush5,971 | 1.5%Nader143 | 9,543 | ||
| R | 41.8%Clinton3,737 | 50.0%Dole4,473 | 7.3%Perot656 | 8,941 | ||
| R | 36.2%Clinton3,714 | 48.3%Bush4,953 | 14.7%Perot1,508 | 10,247 | ||
| R | 47.8%Dukakis4,451 | 51.5%Bush4,798 | 0.8%Larouche71 | 9,320 | ||
| R | 39.9%Mondale4,107 | 59.1%Reagan6,086 | 1.0%Larouche100 | 10,293 | ||
| R | 38.3%Carter3,968 | 54.5%Reagan5,650 | 7.2%Anderson745 | 10,363 | ||
| R | 47.2%Carter4,838 | 51.4%Ford5,267 | 1.4%McCarthy146 | 10,251 | ||
| R | 33.9%McGovern3,382 | 63.8%Nixon6,374 | 2.3%Schmitz232 | 9,988 | ||
| R | 37.3%Humphrey3,721 | 56.9%Nixon5,670 | 5.8%Wallace579 | 9,970 | ||
| D | 62.7%Johnson6,396 | 37.1%Goldwater3,787 | 0.2%Hass22 | 10,205 | ||
| R | 34.4%Kennedy3,746 | 65.4%Nixon7,129 | 0.2%Byrd26 | 10,901 | ||
| R | 35.9%Stevenson3,965 | 62.2%Eisenhower6,864 | 1.9%Andrews205 | 11,034 | ||
| R | 32.5%Stevenson3,745 | 64.0%Eisenhower7,369 | 3.5%Hallinan409 | 11,523 | ||
| D | 47.9%Truman4,327 | 46.9%Dewey4,238 | 5.1%Thurmond465 | 9,030 | ||
| R | 46.2%Roosevelt4,652 | 50.9%Dewey5,123 | 2.9%Thomas297 | 10,072 | ||
| R | 48.1%Roosevelt5,757 | 51.1%Willkie6,123 | 0.8%Thomas97 | 11,977 | ||
| D | 52.0%Roosevelt6,094 | 44.9%Landon5,270 | 3.1%Lemke362 | 11,726 | ||
| D | 52.1%Roosevelt5,586 | 43.5%Hoover4,655 | 4.4%Thomas472 | 10,713 | ||
| R | 30.0%Smith3,200 | 69.1%Hoover7,368 | 0.9%Thomas97 | 10,665 | ||
| R | 15.9%Davis1,673 | 55.1%Coolidge5,810 | 29.0%La Follette3,060 | 10,543 | ||
| R | 32.0%Cox3,339 | 64.5%Harding6,739 | 3.5%Debs362 | 10,440 | ||
| D | 48.3%Wilson3,151 | 48.1%Hughes3,143 | 3.6%Benson235 | 6,529 | ||
| D | 40.0%Wilson2,576 | 26.1%Taft1,682 | 34.0%Roosevelt2,190 | 6,448 | ||
| R | 44.3%Bryan3,035 | 48.5%Taft3,326 | 7.2%Debs495 | 6,856 | ||
| R | 33.3%Parker2,287 | 59.6%Roosevelt4,091 | 7.1%Debs489 | 6,867 | ||
| R | 43.3%Bryan3,596 | 53.9%McKinley4,480 | 2.8%Woolley236 | 8,312 | ||
| R | 47.3%Bryan3,974 | 50.7%McKinley4,256 | 2.0%Palmer166 | 8,396 | ||
| R | 34.8%Cleveland2,428 | 47.9%Harrison3,340 | 17.3%Weaver1,208 | 6,976 | ||
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −13.1% |
| 1896 | −3.4% |
| 1900 | −10.6% |
| 1904 | −26.3% |
| 1908 | −4.2% |
| 1912 | +13.9% |
| 1916 | +0.1% |
| 1920 | −32.6% |
| 1924 | −39.2% |
| 1928 | −39.1% |
| 1932 | +8.7% |
| 1936 | +7.0% |
| 1940 | −3.1% |
| 1944 | −4.7% |
| 1948 | +1.0% |
| 1952 | −31.5% |
| 1956 | −26.3% |
| 1960 | −31.0% |
| 1964 | +25.6% |
| 1968 | −19.5% |
| 1972 | −30.0% |
| 1976 | −4.2% |
| 1980 | −16.2% |
| 1984 | −19.2% |
| 1988 | −3.7% |
| 1992 | −12.1% |
| 1996 | −8.2% |
| 2000 | −27.3% |
| 2004 | −28.6% |
| 2008 | −16.5% |
| 2012 | −20.5% |
| 2016 | −44.9% |
| 2020 | −47.4% |
| 2024 | −51.4% |
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 15,141 | 3,719 | 5,760 | 5,659 | 3 |
| 2010 | 15,473 | 3,550 | 6,267 | 5,649 | 7 |
| 2012 | 15,811 | 3,592 | 6,389 | 5,813 | 17 |
| 2014 | 15,403 | 3,352 | 6,318 | 5,694 | 39 |
| 2016 | 14,996 | 2,928 | 7,190 | 4,805 | 73 |
| 2018 | 14,880 | 2,689 | 7,292 | 4,792 | 107 |
| 2020 | 15,203 | 2,956 | 7,502 | 4,630 | 115 |
| 2022 | 14,825 | 2,621 | 7,600 | 4,466 | 138 |
| 2024 | 14,724 | 2,428 | 7,688 | 4,459 | 149 |
Source: Iowa Secretary of State
Mahaska County, anchored by Oskaloosa, has swung sharply rightward over the past decade — its R+51.4 margin in 2024 reflects a broader rural Iowa realignment that has compressed Democratic performance across the state's small-town heartland.
Across the recorded series it reached a Democratic high of 25.6 points in 1964 and a Republican high of 51.4 points in 2024. Between 2020 and 2024 the county moved 4.1 points toward the Republican candidate; the 2024 margin was 51.4 points.
A population of 22,021, a 92% non-Hispanic-white share, and a median household income of $70,940 describe the county. The county's voting pattern over the last decade is most similar to that of Hamlin County and Sherman County.
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Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Mahaska County, Iowa. Akashic. https://akashic.app/county/19123/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Cities & towns in Mahaska County
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Frequently asked questions
How did Mahaska County, Iowa vote in 2024?
In 2024, Mahaska County, Iowa voted Republican by 51.4 points (R+51.4), carried by the Republican candidate. Out of 10,946 votes cast, 2,577 went Democratic and 8,207 went Republican.
When did Mahaska County, Iowa last vote Democratic?
The most recent presidential election in which Mahaska County, Iowa voted Democratic was 1964.
How many people live in Mahaska County, Iowa?
Mahaska County, Iowa has a population of 22,021 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mahaska County, Iowa?
Median household income in Mahaska County, Iowa is $70,940 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Mahaska County, Iowa?
Akashic tracks 38 presidential elections in Mahaska County, Iowa from 1876 to 2024. Of those, 6 went Democratic and 28 went Republican.