Warren County, Ohio
| Donald Trump ✓Republican | 65.3% | 91,132 |
|---|---|---|
| Kamala HarrisDemocratic | 33.8% | 47,128 |
| Chase OliverIndependent | 0.6% | 829 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | −21.8% |
| 1896 | −21.9% |
| 1900 | −23.0% |
| 1904 | −36.3% |
| 1908 | −22.5% |
| 1912 | −11.0% |
| 1916 | −10.1% |
| 1920 | −30.5% |
| 1924 | −44.3% |
| 1928 | −55.7% |
| 1932 | −14.2% |
| 1936 | −1.0% |
| 1940 | −11.7% |
| 1944 | −19.7% |
| 1948 | −13.4% |
| 1952 | −24.1% |
| 1956 | −31.1% |
| 1960 | −29.2% |
| 1964 | +6.1% |
| 1968 | −22.7% |
| 1972 | −47.6% |
| 1976 | −9.2% |
| 1980 | −31.3% |
| 1984 | −53.3% |
| 1988 | −47.3% |
| 1992 | −27.4% |
| 1996 | −29.1% |
| 2000 | −42.2% |
| 2004 | −44.5% |
| 2008 | −36.0% |
| 2012 | −39.1% |
| 2016 | −36.8% |
| 2020 | −30.8% |
| 2024 | −31.5% |
| Year | Total registered |
|---|---|
| 2016 | 152,192 |
| 2018 | 160,431 |
| 2020 | 167,606 |
| 2022 | 172,066 |
| 2024 | 178,612 |
Anchored by fast-growing communities like Mason and Lebanon, Warren County has delivered double-digit Republican presidential margins for decades, making it a benchmark for measuring GOP strength in southwest Ohio's outer-ring suburbs.
Across the recorded series it reached a Democratic high of 6.1 points in 1964 and a Republican high of 55.7 points in 1928. Between 2020 and 2024 the county moved 0.7 points toward the Republican candidate; the 2024 margin was 31.5 points.
A population of 250,008, a 82% non-Hispanic-white share, and a median household income of $110,132 describe the county. The county's voting pattern over the last decade is most similar to that of Okaloosa County and Clay County.
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Warren County, Ohio. Akashic. https://akashic.app/county/39165/. Accessed May 20, 2026. License: CC BY 4.0.