Illinois·IL·FIPS 17119

Madison County

Voted Republican in 2024 · 133,072 votes cast

About Madison County

Madison County is located in the U.S. state of Illinois. It is a part of the Metro East in southern Illinois. According to the 2020 census, it had a population of 264,776, making it the eighth-most populous county in Illinois and the most populous in the southern portion of the state. The county seat is Edwardsville, and the largest city is Granite City.

2024 Presidential Results

All candidates · Madison County, Illinois

Donald J Trump(Republican)

55.6%73,925

Won by 17,584 votes

Kamala D Harris(Democrat)

42.3%56,341

Other(Other)

2.0%2,718

Chase Oliver(Libertarian)

0.1%88

Margin History

Red = Republican, Blue = Democratic

2024R+13.2

2020R+13.3

2016R+15.3

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Swung Left in 2024

Madison County shifted 0.1 points toward Democrats compared to 2020. Voter turnout decreased by 3.0%.

Madison County — Local Discussion

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What does Madison County really think?

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