Carroll County, Iowa
| Donald Trump ✓Republican | 70.1% | 7,814 |
|---|---|---|
| Kamala HarrisDemocratic | 28.3% | 3,153 |
| Robert F Kennedy Jr.We The People | 1.0% | 114 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | +19.2% |
| 1896 | +7.8% |
| 1900 | +4.5% |
| 1904 | −5.6% |
| 1908 | +14.5% |
| 1912 | +38.8% |
| 1916 | −7.1% |
| 1920 | −47.8% |
| 1924 | −18.3% |
| 1928 | +20.8% |
| 1932 | +51.7% |
| 1936 | +28.8% |
| 1940 | +1.4% |
| 1944 | −0.4% |
| 1948 | +17.7% |
| 1952 | −28.7% |
| 1956 | −6.7% |
| 1960 | +20.6% |
| 1964 | +53.1% |
| 1968 | +9.6% |
| 1972 | +2.1% |
| 1976 | +12.9% |
| 1980 | −11.6% |
| 1984 | −0.6% |
| 1988 | +18.7% |
| 1992 | +3.8% |
| 1996 | +10.7% |
| 2000 | −4.3% |
| 2004 | −10.2% |
| 2008 | +3.7% |
| 2012 | −6.1% |
| 2016 | −31.2% |
| 2020 | −37.8% |
| 2024 | −41.8% |
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 14,965 | 5,306 | 3,154 | 6,499 | 6 |
| 2010 | 14,927 | 4,616 | 4,026 | 6,273 | 12 |
| 2012 | 15,154 | 4,357 | 4,167 | 6,607 | 23 |
| 2014 | 15,161 | 4,181 | 4,133 | 6,801 | 46 |
| 2016 | 15,097 | 4,023 | 4,410 | 6,597 | 67 |
| 2018 | 14,415 | 3,744 | 4,422 | 6,164 | 85 |
| 2020 | 14,878 | 3,833 | 5,290 | 5,659 | 96 |
| 2022 | 14,859 | 3,440 | 5,649 | 5,660 | 110 |
| 2024 | 15,002 | 3,015 | 6,206 | 5,635 | 146 |
Carroll County's farming communities have shifted decisively Republican over the past decade, with the 2024 presidential margin exceeding 40 points — a pattern consistent with broader rural Iowa realignment away from its historically competitive roots.
Across the recorded series it reached a Democratic high of 53.1 points in 1964 and a Republican high of 47.8 points in 1920. Between 2020 and 2024 the county moved 4.1 points toward the Republican candidate; the 2024 margin was 41.8 points.
A population of 20,594, a 92% non-Hispanic-white share, and a median household income of $72,930 describe the county. The county's voting pattern over the last decade is most similar to that of Hardin County and Audubon County.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Carroll County, Iowa. Akashic. https://akashic.app/county/19027/. Accessed May 20, 2026. License: CC BY 4.0.