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Wisconsin·WI·FIPS 55105
Rock County
Voted Democratic in 2024 · 88,310 votes cast
About Rock County
Rock County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 163,687. Its county seat is Janesville. Rock County comprises the Janesville–Beloit metropolitan statistical area and is included in the Madison–Janesville–Beloit combined statistical area.
Read more on Wikipedia →Total Votes (2024)
88,310
Winner Margin
D+3.6
Turnout Change
+3.5%
2020→2024 Swing
R+7.5
2024 Presidential Results
All candidates · Rock County, Wisconsin
Kamala D Harris(Democrat)
52.8%46,642
Won by 6,424 votes
Donald J Trump(Republican)
45.5%40,218
Other(Other)
1.4%1,203
Chase Oliver(Libertarian)
0.3%247
Margin History
Red = Republican, Blue = Democratic
2024D+3.6
2020D+11.2
2016D+10.3
🔴
Swung Right in 2024
Rock County shifted 7.5 points toward Republicans compared to 2020. Voter turnout increased by 3.5%.
What does Rock County really think?
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Election data: MIT Election Data Science Lab, Harvard Dataverse (CC BY 4.0)