Presidential elections · 2000–2024
Clayton County, IA — Presidential Election Results (2000–2024)
In 2024, Clayton County, Iowa voted for Donald J. Trump (Republican) by R+34.4 — 3,017 Democratic to 6,255 Republican of 9,400 votes cast. From 2020 to 2024 it shifted 5.4 points toward Republicans. That makes it 21.2 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 Clayton County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 3,017 | 6,255 | 128 | 32.1% | 66.5% | R+34.4 |
| 2020 | 3,340 | 6,119 | 135 | 34.8% | 63.8% | R+29.0 |
| 2016 | 3,237 | 5,317 | 575 | 35.5% | 58.2% | R+22.8 |
| 2012 | 4,806 | 4,164 | 168 | 52.6% | 45.6% | D+7.0 |
| 2008 | 5,195 | 3,651 | 143 | 57.8% | 40.6% | D+17.2 |
| 2004 | 4,736 | 4,312 | 120 | 51.7% | 47.0% | D+4.6 |
| 2000 | 4,238 | 4,034 | 299 | 49.4% | 47.1% | D+2.4 |
Clayton County presidential elections — FAQ
Who carried Clayton County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Clayton County, Iowa in 2024 by R+34.4, with 9,400 votes cast. Data: MIT Election Data & Science Lab.
How did Clayton County shift between 2020 and 2024?+
Clayton County shifted 5.4 points toward Republicans between 2020 (R+29.0) and 2024 (R+34.4).
Is Clayton County more Democratic or Republican than Iowa overall?+
In 2024, Clayton County went R+34.4 while Iowa overall went R+13.2 — 21.2 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.