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California

Contra Costa County, California presidential election results

In 2024 Kamala Harris won Contra Costa County by 37.9 points, out of 528,987 votes for president.

Amador (no county figures)Glenn (no county figures)Lake (no county figures)Mariposa (no county figures)Napa (no county figures)Shasta (no county figures)Stanislaus (no county figures)Yuba (no county figures)Alpine (no county figures)Butte (no county figures)Mendocino (no county figures)Modoc (no county figures)Mono (no county figures)Nevada (no county figures)Orange (no county figures)Riverside (no county figures)San Benito (no county figures)San Diego (no county figures)San Francisco (no county figures)Yolo (no county figures)San Mateo (no county figures)Santa Barbara (no county figures)Santa Cruz (no county figures)Solano (no county figures)Sutter (no county figures)Tehama (no county figures)Tuolumne (no county figures)Calaveras (no county figures)Contra Costa County: Kamala Harris +37.9Del Norte (no county figures)Imperial (no county figures)Kern (no county figures)Kings (no county figures)Madera (no county figures)Colusa (no county figures)Inyo (no county figures)Merced (no county figures)Plumas (no county figures)San Joaquin (no county figures)Sierra (no county figures)Tulare (no county figures)Marin (no county figures)Monterey (no county figures)Placer (no county figures)Fresno (no county figures)Humboldt (no county figures)Lassen (no county figures)Los Angeles (no county figures)Sacramento (no county figures)San Bernardino (no county figures)Ventura (no county figures)Alameda (no county figures)San Luis Obispo (no county figures)Siskiyou (no county figures)Sonoma (no county figures)Trinity (no county figures)El Dorado (no county figures)Santa Clara (no county figures)
D+50R+50D+25R+252000: D+21.720002004: D+25.920042008: D+37.820082012: D+35.220122016: D+43.620162020: D+45.320202024: D+37.92024
Contra Costa County margin: Republican minus Democratic share, in points. Bars above the line lean Republican, below lean Democratic.

2024

California 2024
TicketVotesShareBar
Kamala Harris DEM356,00867.3%
Donald J. Trump REP155,30829.4%
Jill Stein GRN6,7011.3%
Robert F. Kennedy Jr. AI6,5451.2%
Chase Oliver LIB2,3560.4%
Claudia De la Cruz PF1,9860.4%
Peter Sonski (W/I)830.0%
Total528,987

Contra Costa County was D+37.9 against D+20.1 statewide, 17.8 points more Democratic than the state.

Source: California Secretary of State, Statement of Vote, November 5, 2024 General Election; President by County (printed pages 16-18 = PDF pages 18-20)

2020

California 2020
TicketVotesShareBar
Joseph R. Biden DEM416,38671.6%
Donald J. Trump REP152,87726.3%
Jo Jorgensen LIB6,1161.1%
Howie Hawkins GRN2,6180.5%
Roque "Rocky" De La Fuente Guerra AI1,9490.3%
Gloria La Riva PF1,2840.2%
Brian Carroll (W/I)570.0%
Mark Charles (W/I)140.0%
Jesse Ventura (W/I)100.0%
Brock Pierce (W/I)30.0%
Joseph Kishore (W/I)20.0%
Total581,316

Contra Costa County was D+45.3 against D+29.2 statewide, 16.1 points more Democratic than the state.

Source: California Secretary of State, Statement of Vote, November 3, 2020 General Election; President by County (printed pages 18-23 = PDF pages 22-27; the write-in candidates continue in a second column block)

2016

California 2016
TicketVotesShareBar
Hillary Clinton DEM319,28768.5%
Donald J. Trump115,95624.9%
Gary Johnson LIB16,1233.5%
Jill Stein (GRN)8,6371.9%
Bernard "Bernie" Sanders (W/I)3,2040.7%
Gloria Estela La Riva (PF)1,5660.3%
Evan McMullin (W/I)1,3550.3%
Mike Maturen (W/I)360.0%
Laurence Kotlikoff (W/I)110.0%
Jerry White (W/I)00.0%
Total466,175

Contra Costa County was D+43.6 against D+30.1 statewide, 13.5 points more Democratic than the state.

Source: California Secretary of State, Statement of Vote, November 8, 2016, General Election (81 pages): President by county (pages 19-24; pages 22-24 hold two more write-in columns)

2012

California 2012
TicketVotesShareBar
Barack Obama DEM290,82466.4%
Mitt Romney REP136,51731.2%
Gary Johnson LIB4,3721.0%
Jill Stein GRN2,8790.7%
Roseanne Barr PF1,5430.4%
Thomas Hoefling AI1,3910.3%
Ron Paul NPP (W/I)6270.1%
Ross C. "Rocky" Anderson NPP (W/I)430.0%
Virgil Goode NPP (W/I)200.0%
James Harris NPP (W/I)60.0%
Stephen Durham NPP (W/I)30.0%
Stewart Alexander NPP (W/I)10.0%
Shelia "Samm" Tittle NPP (W/I)00.0%
Jerry White NPP (W/I)00.0%
Total438,226

Contra Costa County was D+35.2 against D+23.1 statewide, 12.1 points more Democratic than the state.

Source: California Secretary of State, Statement of Vote, November 6, 2012 General Election; President by County (printed pages 17-22 = PDF pages 19-24; the write-in candidates continue in a second column block). * = incumbent

2008

California 2008
TicketVotesShareBar
Barack Obama DEM306,98368.0%
John McCain REP136,43630.2%
All other candidates8,2311.8%
Total451,650

Contra Costa County was D+37.8 against D+24.1 statewide, 13.8 points more Democratic than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

2004

California 2004
TicketVotesShareBar
John Kerry DEM257,25462.4%
George W. Bush REP150,60836.5%
All other candidates4,2771.0%
Total412,139

Contra Costa County was D+25.9 against D+9.9 statewide, 16.0 points more Democratic than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

2000

California 2000
TicketVotesShareBar
Albert Gore, Jr. DEM224,33858.8%
George W. Bush REP141,37337.1%
All other candidates15,7674.1%
Total381,478

Contra Costa County was D+21.7 against D+11.8 statewide, 9.9 points more Democratic than the state.

Source: MIT Election Data and Science Lab, County Presidential Election Returns 2000-2016 (compiled from official state election records)

Questions and answers

Who won Contra Costa County, California in 2024?

Kamala Harris won Contra Costa County by 37.9 points, out of 528,987 votes counted for president.

Is Contra Costa County Republican or Democratic?

Presidential results: 2024: Democratic by 37.9 points; 2020: Democratic by 45.3 points; 2016: Democratic by 43.6 points; 2012: Democratic by 35.2 points; 2008: Democratic by 37.8 points; 2004: Democratic by 25.9 points; 2000: Democratic by 21.7 points.

How does Contra Costa County vote compared with the rest of California?

In 2024 it was 17.8 points more Democratic than the state as a whole (Democratic by 37.9 points against Democratic by 20.1 points statewide).

Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data