Illinois·IL·FIPS 17131

Mercer County

Voted Republican in 2024 · 8,346 votes cast

About Mercer County

Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo. Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.

2024 Presidential Results

All candidates · Mercer County, Illinois

Donald J Trump(Republican)

62.5%5,215

Won by 2,265 votes

Kamala D Harris(Democrat)

35.3%2,950

Other(Other)

2.2%181

Chase Oliver(Libertarian)

0.0%0

Margin History

Red = Republican, Blue = Democratic

2024R+27.1

2020R+24.0

2016R+20.4

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Swung Right in 2024

Mercer County shifted 3.1 points toward Republicans compared to 2020. Voter turnout decreased by 6.2%.

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No one has claimed Mercer County yet

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Mercer County — Local Discussion

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What does Mercer County really think?

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