Benton County, Iowa
| Donald Trump ✓Republican | 65.8% | 9,549 |
|---|---|---|
| Kamala HarrisDemocratic | 32.7% | 4,739 |
| Robert F Kennedy Jr.We The People | 0.7% | 101 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | +0.9% |
| 1896 | −16.7% |
| 1900 | −16.3% |
| 1904 | −26.3% |
| 1908 | −13.2% |
| 1912 | +11.0% |
| 1916 | −10.8% |
| 1920 | −45.6% |
| 1924 | −42.2% |
| 1928 | −26.1% |
| 1932 | +26.9% |
| 1936 | +14.7% |
| 1940 | +0.6% |
| 1944 | +2.7% |
| 1948 | +5.2% |
| 1952 | −23.2% |
| 1956 | −16.9% |
| 1960 | −12.8% |
| 1964 | +31.3% |
| 1968 | −11.1% |
| 1972 | −10.2% |
| 1976 | +4.7% |
| 1980 | −10.4% |
| 1984 | −5.4% |
| 1988 | +18.7% |
| 1992 | +9.6% |
| 1996 | +16.6% |
| 2000 | +3.8% |
| 2004 | +0.7% |
| 2008 | +4.5% |
| 2012 | −0.6% |
| 2016 | −25.4% |
| 2020 | −27.5% |
| 2024 | −33.2% |
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 18,171 | 5,464 | 4,886 | 7,815 | 6 |
| 2010 | 18,399 | 5,248 | 5,230 | 7,910 | 11 |
| 2012 | 18,285 | 5,024 | 5,333 | 7,913 | 15 |
| 2014 | 18,110 | 4,679 | 5,229 | 8,167 | 35 |
| 2016 | 18,283 | 4,324 | 6,196 | 7,693 | 70 |
| 2018 | 18,034 | 4,180 | 5,946 | 7,801 | 107 |
| 2020 | 18,360 | 4,525 | 6,502 | 7,198 | 135 |
| 2022 | 18,589 | 4,200 | 6,734 | 7,519 | 136 |
| 2024 | 18,722 | 3,694 | 7,405 | 7,476 | 147 |
Benton County's largely agricultural economy and small-town demographics have pushed its presidential margins steadily rightward over the past decade, reaching R+33 in 2024—roughly double the gap recorded in 2012.
Across the recorded series it reached a Democratic high of 31.3 points in 1964 and a Republican high of 45.6 points in 1920. Between 2020 and 2024 the county moved 5.6 points toward the Republican candidate; the 2024 margin was 33.2 points.
A population of 25,724, a 94% non-Hispanic-white share, and a median household income of $86,962 describe the county. The county's voting pattern over the last decade is most similar to that of Greene County and Clarke County.
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Benton County, Iowa. Akashic. https://akashic.app/county/19011/. Accessed May 20, 2026. License: CC BY 4.0.