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Montana·MT·FIPS 30043
Jefferson County
Voted Republican in 2024 · 8,291 votes cast
About Jefferson County
Jefferson County is a county in Montana, United States. As of the 2020 census, the population was 12,085. Its county seat is Boulder. The county was created in 1865 and named for President Thomas Jefferson.
Read more on Wikipedia →Total Votes (2024)
8,291
Winner Margin
R+36.5
Turnout Change
+1.7%
2020→2024 Swing
R+3.2
2024 Presidential Results
All candidates · Jefferson County, Montana
Donald J Trump(Republican)
66.9%5,544
Won by 3,028 votes
Kamala D Harris(Democrat)
30.3%2,516
Other(Other)
2.2%180
Chase Oliver(Libertarian)
0.6%51
Margin History
Red = Republican, Blue = Democratic
2024R+36.5
2020R+33.4
2016R+32.5
🔴
Swung Right in 2024
Jefferson County shifted 3.2 points toward Republicans compared to 2020. Voter turnout increased by 1.7%.
What does Jefferson County really think?
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Election data: MIT Election Data Science Lab, Harvard Dataverse (CC BY 4.0)