Warren County, Iowa
| Donald Trump ✓Republican | 59.4% | 19,486 |
|---|---|---|
| Kamala HarrisDemocratic | 38.8% | 12,712 |
| Robert F Kennedy Jr.We The People | 0.8% | 265 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | −21.8% |
| 1896 | −12.0% |
| 1900 | −21.7% |
| 1904 | −39.4% |
| 1908 | −21.4% |
| 1912 | +0.2% |
| 1916 | −6.5% |
| 1920 | −43.1% |
| 1924 | −45.2% |
| 1928 | −40.2% |
| 1932 | −2.5% |
| 1936 | −7.2% |
| 1940 | −13.0% |
| 1944 | −12.4% |
| 1948 | −5.2% |
| 1952 | −31.8% |
| 1956 | −18.5% |
| 1960 | −18.5% |
| 1964 | +28.6% |
| 1968 | −9.0% |
| 1972 | −17.1% |
| 1976 | +11.0% |
| 1980 | −4.8% |
| 1984 | −0.6% |
| 1988 | +19.9% |
| 1992 | +7.2% |
| 1996 | +12.7% |
| 2000 | −0.5% |
| 2004 | −6.2% |
| 2008 | +0.6% |
| 2012 | −1.9% |
| 2016 | −16.0% |
| 2020 | −16.8% |
| 2024 | −20.6% |
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 31,925 | 11,471 | 9,602 | 10,843 | 9 |
| 2010 | 32,637 | 10,940 | 10,503 | 11,165 | 29 |
| 2012 | 33,416 | 10,567 | 11,276 | 11,536 | 37 |
| 2014 | 33,814 | 10,150 | 11,444 | 12,155 | 65 |
| 2016 | 35,174 | 10,393 | 12,389 | 12,243 | 149 |
| 2018 | 35,865 | 10,489 | 12,234 | 12,877 | 265 |
| 2020 | 38,121 | 11,661 | 14,168 | 11,964 | 328 |
| 2022 | 39,233 | 11,182 | 14,817 | 12,873 | 361 |
| 2024 | 40,933 | 10,717 | 16,098 | 13,719 | 399 |
Warren County sits on the southern edge of the Des Moines metro, and its rapid exurban growth has coincided with a consistent rightward trend, delivering a 20-point Republican margin in 2024 after posting much narrower results in earlier cycles.
Across the recorded series it reached a Democratic high of 28.6 points in 1964 and a Republican high of 45.2 points in 1924. Between 2020 and 2024 the county moved 3.9 points toward the Republican candidate; the 2024 margin was 20.6 points.
A population of 54,409, a 92% non-Hispanic-white share, and a median household income of $94,588 describe the county. The county's voting pattern over the last decade is most similar to that of Moody County and Greene County.
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Warren County, Iowa. Akashic. https://akashic.app/county/19181/. Accessed May 20, 2026. License: CC BY 4.0.