Kamala D. Harris won St. Louis County with 60.8% of the vote, ahead of Donald J. Trump. 502,738 votes were counted. The party margin was a Democratic lead of 23.4 points. Compared with the previous presidential election in St. Louis County that is loaded, the margin moved 0.6 points toward Republicans.
St. Louis County leans Democratic by 24.0 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
St. Louis County voted for the winner of the national popular vote in 5 of 7 presidential elections from 2000 to 2024. On average its margin sat 14.2 points away from the national margin.
In 2024, 502,738 votes were cast in the biggest race, which is 67.5% of the 745,255 citizens aged 18 and over in St. Louis County.
More: US election results, counties and cities, housing market.