Presidential elections · 2000–2024
Sioux County, IA — Presidential Election Results (2000–2024)
In 2024, Sioux County, Iowa voted for Donald J. Trump (Republican) by R+70.7 — 2,626 Democratic to 16,053 Republican of 19,001 votes cast. From 2020 to 2024 it shifted 3.7 points toward Republicans. That makes it 57.5 points more Republican than Iowa overall (R+13.2).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in Sioux County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 2,626 | 16,053 | 322 | 13.8% | 84.5% | R+70.7 |
| 2020 | 3,019 | 15,775 | 257 | 15.8% | 82.8% | R+67.0 |
| 2016 | 2,300 | 14,785 | 1,109 | 12.6% | 81.3% | R+68.6 |
| 2012 | 2,700 | 14,407 | 201 | 15.6% | 83.2% | R+67.6 |
| 2008 | 3,030 | 13,490 | 144 | 18.2% | 81.0% | R+62.8 |
| 2004 | 2,259 | 14,229 | 82 | 13.6% | 85.9% | R+72.2 |
| 2000 | 2,148 | 12,241 | 303 | 14.6% | 83.3% | R+68.7 |
Sioux County presidential elections — FAQ
Who carried Sioux County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Sioux County, Iowa in 2024 by R+70.7, with 19,001 votes cast. Data: MIT Election Data & Science Lab.
How did Sioux County shift between 2020 and 2024?+
Sioux County shifted 3.7 points toward Republicans between 2020 (R+67.0) and 2024 (R+70.7).
Is Sioux County more Democratic or Republican than Iowa overall?+
In 2024, Sioux County went R+70.7 while Iowa overall went R+13.2 — 57.5 points more Republican than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.