Warren County, OH
OH · Presidential Elections 1892–2024
Warren County, OH (Ohio) voted R+31.3 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 91,132 votes (64.74%) to 47,128 (33.48%) for Harris.
This represents a R+0.5% swing toward Republicans compared to 2020. Warren County is classified as a deep Republican county. Warren County has voted Republican in every presidential election since 1968. The county has a population of approximately 250,008.
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Quick Stats
Demographics
Community Profile
Religious Composition
Source: Religion Census 2020Ancestry Groups
Source: Census ACSTop reported ancestry groups (compared to national average).
Age Distribution
Employment by Industry
Census ACSPresidential Elections
Presidential Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 33.5%(47,128) | 64.7%(91,132) | R+31.3 | R+0.5 |
| 2020 | 33.9%(46,069) | 64.7%(87,988) | R+30.8 | D+6.0 |
| 2016 | 28.2%(33,730) | 65.0%(77,643) | R+36.8 | D+2.3 |
| 2012 | 29.4%(32,909) | 68.5%(76,564) | R+39.1 | R+3.1 |
| 2008 | 31.4%(33,398) | 67.4%(71,691) | R+36.0 | D+8.5 |
| 2004 | 27.6%(26,044) | 72.1%(68,037) | R+44.5 | R+2.2 |
| 2000 | 27.7%(19,142) | 70.0%(48,318) | R+42.2 | R+13.1 |
| 1996 | 30.8%(17,089) | 59.9%(33,210) | R+29.1 | R+1.7 |
| 1992 | 25.6%(13,542) | 53.0%(27,998) | R+27.4 | D+20.0 |
| 1988 | 26.0%(11,145) | 73.4%(31,419) | R+47.3 | D+5.9 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Warren County, OH • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 35.5%(49,350) | 61.1%(84,796) | R+25.5 | D+3.5 |
| 2022 | 35.5%(35,970) | 64.5%(65,370) | R+29.0 | R+0.9 |
| 2018 | 36.0%(35,815) | 64.0%(63,757) | R+28.1 | D+26.0 |
| 2016 | 20.8%(23,827) | 74.9%(85,848) | R+54.1 | R+20.2 |
| 2012 | 31.0%(33,787) | 64.9%(70,755) | R+33.9 | D+22.2 |
| 2010 | 20.6%(16,355) | 76.7%(60,795) | R+56.1 | R+29.2 |
| 2006 | 36.5%(25,102) | 63.4%(43,588) | R+26.9 | D+30.9 |
| 2004 | 21.1%(19,251) | 78.9%(72,083) | R+57.8 | R+2.0 |
| 2000 | 20.1%(13,546) | 76.0%(51,135) | R+55.9 | R+12.8 |
| 1998 | 28.5%(12,871) | 71.5%(32,323) | R+43.0 | D+0.9 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 26.6%(27,070) | 73.2%(74,345) | R+46.5 | R+10.9 |
| 2018 | 30.9%(30,720) | 66.5%(66,190) | R+35.6 | D+23.4 |
| 2014 | 19.4%(11,427) | 78.4%(46,167) | R+59.0 | R+18.6 |
| 2010 | 27.9%(22,271) | 68.4%(54,536) | R+40.5 | R+23.3 |
| 2006 | 40.3%(27,434) | 57.4%(39,094) | R+17.1 | D+38.9 |
| 2002 | 20.0%(9,833) | 76.0%(37,388) | R+56.0 | R+17.0 |
| 1998 | 28.3%(12,562) | 67.3%(29,897) | R+39.0 | D+27.6 |
| 1994 | 15.3%(5,903) | 81.9%(31,635) | R+66.6 | R+29.9 |
| 1990 | 31.6%(9,861) | 68.4%(21,299) | R+36.7 | R+27.0 |
| 1986 | 45.1%(11,477) | 54.8%(13,939) | R+9.7 | R+6.3 |
Source: Official state election returns via MIT Election Data + Science Lab