Contra Costa County, California: null
California · Presidential Elections 1876–2024
D+38.0
2024 Margin
R+7.4%
2020→2024 Swing
D since 1988
Voting Streak
Classification
1.2M
Population
Contra Costa County, California voted D+38.0 for Kamala Harris in 2024, with Harris receiving 356,008 votes (67.31%). This represented a R+7.4% swing toward Republicans compared to 2020. The county has voted Democratic in every presidential election since 1988.
Electoral Behavior
Volatility
5.5
Elasticity
Responsive
Trend
+0.7/yr
Quick Stats
2024 ResultD+38.0
2020→2024 SwingR+7.4%
Voting StreakD since 1988
Elections on Record38
Demographics
Population1,165,927
Median Age
40.1(US: 38.4)
College (BA+)
62.4%(US: 47.9%)
Median Income
$120,020(US: $78k)
White (non-Hisp)
39.3%(US: 57.5%)
Hispanic
27.3%(US: 18.6%)
Black
8.7%(US: 12.3%)
Asian
18.3%(US: 5.7%)
Homeownership
67.7%(US: 64.2%)
Poverty Rate
8.3%(US: 12.4%)
Veterans
4.4%(US: 6.4%)
Presidential Elections
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 67.3%(356,008) | 29.4%(155,308) | D+38.0 | -7.4 |
| 2020 | 71.6%(416,386) | 26.3%(152,877) | D+45.3 | +2.3 |
| 2016 | 67.5%(319,287) | 24.5%(115,956) | D+43.0 | +7.9 |
| 2012 | 66.2%(290,824) | 31.1%(136,517) | D+35.1 | -2.5 |
| 2008 | 67.7%(306,983) | 30.1%(136,436) | D+37.6 | +11.8 |
| 2004 | 62.3%(257,254) | 36.5%(150,608) | D+25.8 | +4.1 |
| 2000 | 58.8%(224,338) | 37.1%(141,373) | D+21.8 | +1.2 |
| 1996 | 55.7%(196,512) | 35.1%(123,954) | D+20.6 | -0.8 |
| 1992 | 50.9%(194,960) | 29.5%(112,965) | D+21.4 | +18.2 |
| 1988 | 51.1%(169,411) | 47.9%(158,652) | D+3.3 | +13.2 |
Senate Elections
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2018 | 58.3%(222,349) | 0.0%(0) | D+58.3 | +18.2 |
| 2012 | 70.1%(300,194) | 29.9%(128,310) | D+40.1 | -1.5 |
| 2006 | 68.5%(205,516) | 26.9%(80,764) | D+41.6 | +13.2 |
| 2000 | 61.6%(232,109) | 33.2%(125,188) | D+28.4 | +6.5 |
| 1994 | 57.9%(170,256) | 36.0%(105,854) | D+21.9 | -9.4 |
| 1992 | 63.0%(229,988) | 31.6%(115,507) | D+31.3 | +36.2 |
| 1988 | 46.2%(152,714) | 51.1%(168,760) | R+4.9 | +3.5 |
| 1982 | 44.0%(110,813) | 52.3%(131,875) | R+8.4 | -5.3 |
| 1976 | 47.3%(121,195) | 50.4%(129,008) | R+3.0 | -15.3 |
| 1970 | 55.4%(111,089) | 43.1%(86,528) | D+12.2 | +11.4 |
Governor Elections
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2018 | 68.2%(283,805) | 31.8%(132,345) | D+36.4 | -0.9 |
| 2014 | 68.7%(174,403) | 31.4%(79,660) | D+37.3 | +12.1 |
| 2010 | 60.6%(211,125) | 35.5%(123,606) | D+25.1 | +35.0 |
| 2006 | 42.5%(128,578) | 52.4%(158,565) | R+9.9 | -27.5 |
| 2002 | 53.2%(140,975) | 35.7%(94,487) | D+17.6 | -11.0 |
| 1998 | 62.8%(190,200) | 34.3%(103,686) | D+28.6 | +35.0 |
| 1994 | 45.0%(135,133) | 51.5%(154,482) | R+6.5 | -15.4 |
| 1990 | 52.9%(144,268) | 43.9%(119,901) | D+8.9 | +37.6 |
| 1986 | 34.7%(87,117) | 63.3%(159,105) | R+28.6 | -26.0 |
| 1982 | 47.2%(119,712) | 49.8%(126,460) | R+2.7 | -21.1 |
Primary Election History
| Year | Party | Winner | Runner-up | Nominee? |
|---|---|---|---|---|
| 2024 | GOP | Donald Trump(71.1%) | Nikki Haley(24.7%) | ✓ |
| 2020 | Dem | Joe Biden(31.4%) | Bernie Sanders(29.7%) | ✓ |
| 2016 | Dem | Hillary Clinton(56.7%) | Bernie Sanders(42.7%) | ✓ |
| 2016 | GOP | Donald Trump(70.0%) | John Kasich(17.8%) | ✓ |
| 2012 | Dem | Barack Obama(100.0%) | Other(0.0%) | — |
| 2008 | Dem | Hillary Clinton(49.4%) | Barack Obama(45.2%) | ✗ |
✓ = County picked eventual party nominee