Ohio·OH·FIPS 39165

Warren County

Voted Republican in 2024 · 139,619 votes cast

About Warren County

Warren County is a county located in the southwestern part of the U.S. state of Ohio. As of the 2020 census, the population was 242,337. Its county seat is Lebanon and largest city is Mason. The county is one of Ohio's most affluent, with the second highest median income of the state's 88 counties. The county was established on May 1, 1803, from Hamilton County; it is named for Dr. Joseph Warren, a hero of the Revolution who sent Paul Revere and the overlooked William Dawes on their famous rides and who died at the Battle of Bunker Hill. Warren County is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area.

2024 Presidential Results

All candidates · Warren County, Ohio

Donald J Trump(Republican)

65.3%91,132

Won by 44,004 votes

Kamala D Harris(Democrat)

33.8%47,128

Chase Oliver(Libertarian)

0.6%829

Other(Other)

0.4%530

Margin History

Red = Republican, Blue = Democratic

2024R+31.5

2020R+30.8

2016R+37.4

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Swung Right in 2024

Warren County shifted 0.7 points toward Republicans compared to 2020. Voter turnout increased by 2.6%.

Warren County — Local Discussion

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What does Warren County really think?

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Election data: MIT Election Data Science Lab, Harvard Dataverse (CC BY 4.0)