Presidential elections · 2000–2024
St. Louis County, MO — Presidential Election Results (2000–2024)
In 2024, St. Louis County, Missouri voted for Kamala D. Harris (Democratic) by D+23.4 — 305,635 Democratic to 187,982 Republican of 502,738 votes cast. From 2020 to 2024 it shifted 0.6 points toward Republicans. That makes it 41.8 points more Democratic than Missouri overall (R+18.4).
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 St. Louis County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 305,635 | 187,982 | 9,121 | 60.8% | 37.4% | D+23.4 |
| 2020 | 328,151 | 199,493 | 8,802 | 61.2% | 37.2% | D+24.0 |
| 2016 | 286,704 | 202,434 | 25,720 | 55.7% | 39.3% | D+16.4 |
| 2012 | 297,097 | 224,742 | 6,837 | 56.2% | 42.5% | D+13.7 |
| 2008 | 333,123 | 221,705 | 5,026 | 59.5% | 39.6% | D+19.9 |
| 2004 | 295,284 | 244,969 | 2,730 | 54.4% | 45.1% | D+9.3 |
| 2000 | 250,631 | 224,689 | 11,564 | 51.5% | 46.1% | D+5.3 |
St. Louis County presidential elections — FAQ
Who carried St. Louis County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried St. Louis County, Missouri in 2024 by D+23.4, with 502,738 votes cast. Data: MIT Election Data & Science Lab.
How did St. Louis County shift between 2020 and 2024?+
St. Louis County shifted 0.6 points toward Republicans between 2020 (D+24.0) and 2024 (D+23.4).
Is St. Louis County more Democratic or Republican than Missouri overall?+
In 2024, St. Louis County went D+23.4 while Missouri overall went R+18.4 — 41.8 points more Democratic 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.