Missouri·MO·FIPS 29021

Buchanan County

Voted Republican in 2024 · 35,743 votes cast

About Buchanan County

Buchanan County is located in the U.S. state of Missouri. As of the 2020 United States census, the population was 84,793. Its county seat is St. Joseph. When originally formed in 1838, the county was named Roberts County, after settler Hiram Roberts. It was renamed in 1839 for James Buchanan, then a U.S. Senator and later President of the United States. The county was formed from land annexed to Missouri, as were five other counties. Buchanan County is included in the Kansas City CSA.

2024 Presidential Results

All candidates · Buchanan County, Missouri

Donald J Trump(Republican)

63.2%22,606

Won by 10,008 votes

Kamala D Harris(Democrat)

35.2%12,598

Chase Oliver(Libertarian)

1.0%352

Other(Other)

0.5%187

Margin History

Red = Republican, Blue = Democratic

2024R+28.0

2020R+24.6

2016R+26.1

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Swung Right in 2024

Buchanan County shifted 3.4 points toward Republicans compared to 2020. Voter turnout decreased by 2.3%.

Buchanan County — Local Discussion

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What does Buchanan County really think?

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