Illinois·IL·FIPS 17199

Williamson County

Voted Republican in 2024 · 33,068 votes cast

About Williamson County

Williamson County is a county in Illinois. At the 2020 census, it had a population of 67,153. Its largest city and county seat is Marion. Williamson County is part of the Metro Lakeland area of Southern Illinois.

2024 Presidential Results

All candidates · Williamson County, Illinois

Donald J Trump(Republican)

68.6%22,686

Won by 12,796 votes

Kamala D Harris(Democrat)

29.9%9,890

Other(Other)

1.4%477

Chase Oliver(Libertarian)

0.0%15

Margin History

Red = Republican, Blue = Democratic

2024R+38.7

2020R+37.4

2016R+40.8

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Swung Right in 2024

Williamson County shifted 1.3 points toward Republicans compared to 2020. Voter turnout decreased by 1.7%.

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No one has claimed Williamson County yet

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Williamson County — Local Discussion

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