Wisconsin·WI·FIPS 55021

Columbia County

Voted Republican in 2024 · 34,914 votes cast

About Columbia County

Columbia County is a county located in the U.S. state of Wisconsin. As of the 2020 census, the population was 58,490. Its county seat and largest city is Portage. The county was created in 1846 as part of Wisconsin Territory. Columbia County is part of the Madison, WI Metropolitan Statistical Area as well as the Madison-Janesville-Beloit, WI Combined Statistical Area.

2024 Presidential Results

All candidates · Columbia County, Wisconsin

Donald J Trump(Republican)

51.5%17,988

Won by 1,600 votes

Kamala D Harris(Democrat)

46.9%16,388

Other(Other)

1.2%430

Chase Oliver(Libertarian)

0.3%108

Margin History

Red = Republican, Blue = Democratic

2024R+2.3

2020R+1.5

2016R+2.1

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Swung Right in 2024

Columbia County shifted 0.8 points toward Republicans compared to 2020. Voter turnout increased by 3.1%.

Columbia County — Local Discussion

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What does Columbia County really think?

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