← Back to Battleground Map
Iowa·IA·FIPS 19141
O'Brien County
Voted Republican in 2024 · 7,569 votes cast
About O'Brien County
O'Brien County is a county in the U.S. state of Iowa. As of the 2020 United States census, the population was 14,182. The county seat is Primghar.
Read more on Wikipedia →Total Votes (2024)
7,569
Winner Margin
R+60.4
Turnout Change
+0.2%
2020→2024 Swing
R+3.4
2024 Presidential Results
All candidates · O'Brien County, Iowa
Donald J Trump(Republican)
158.5%11,996
Won by 9,140 votes
Kamala D Harris(Democrat)
37.7%2,856
Undervotes(Other)
3.2%242
Chase Oliver(Libertarian)
0.6%44
Margin History
Red = Republican, Blue = Democratic
2024R+60.4
2020R+57.0
2016R+59.9
🔴
Swung Right in 2024
O'Brien County shifted 3.4 points toward Republicans compared to 2020. Voter turnout increased by 0.2%.
What does O'Brien County really think?
Elections happen once every 4 years. On constitution.vote, your voice is heard every day. Join the assembly and vote on the issues that matter to Iowa.
Election data: MIT Election Data Science Lab, Harvard Dataverse (CC BY 4.0)