Sonoma County, CA

CA · Presidential Elections 1876–2024

D+46.2
2024 Margin
R+5.3%
2020→2024 Swing
D since 1988
Voting Streak
485K
Population

Sonoma County, CA (California) voted D+46.2 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 179,600 votes (71.42%) to 63,426 (25.22%) for Trump.

This represents a R+5.3% swing toward Republicans compared to 2020. Sonoma County is classified as a deep Democratic county. Sonoma County has voted Democratic in every presidential election since 1988. The county has a population of approximately 485,040.

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Quick Stats

2024 ResultD+46.2
2020→2024 SwingR+5.3%
Voting StreakD since 1988
Elections on Record38

Demographics

Population485,040
Median Age
42.9(US: 38.7)
College (BA+)
38.5%(US: 35.2%)
Median Income
$104,674(US: $80k)
White (non-Hisp)
59.1%(US: 57.6%)
Hispanic
30.0%(US: 19.1%)
Black
1.6%(US: 12.2%)
Asian
4.5%(US: 5.7%)
Homeownership
62.6%(US: 64.5%)
Poverty Rate
8.9%(US: 12.3%)
Veterans
4.8%(US: 6.2%)
Non-English (CVAP)
17.2%(US: 17.0%)
Source: Census ACS 5-Year (2020-2024)

Community Profile

Religious Composition

Source: Religion Census 2020
Catholic
23.5%
Evangelical
5.3%(Below Average)
Mainline Protestant
1.5%
LDS/Mormon
1.4%
Jewish
0.2%

Ancestry Groups

Source: Census ACS

Top reported ancestry groups (compared to national average).

Mexican
24.3%Above Average(2.2x)
German
12.4%
Irish
12.2%(1.3x)
English
12.1%(1.4x)
Italian
8.0%Above Average(1.7x)
French
2.8%(1.5x)
+ 5 more reported ancestry groups

Age Distribution

Median:42.9 yrs(US: 38.5)
Under 18
19.1%↓
18-29
7.8%↓
30-44
18.9%
45-64
32.7%↑
65+
21.5%↑
National average

Employment by Industry

Census ACS
Professional & Technical
12.7%
Retail Trade
10.8%
Manufacturing
10.0%
Educational Services
9.5%(1.1x US)
Construction
9.0%(1.3x US)
Healthcare & Social Services
5.1%(1.1x US)
National average
+ 1 more sectors

Presidential Elections

Presidential Results

YearDemocratRepublicanMarginSwing
202471.4%(179,600)25.2%(63,426)D+46.2R+5.3
202074.5%(199,938)23.0%(61,825)D+51.5D+4.7
201668.8%(160,435)22.0%(51,408)D+46.7D+1.0
201271.0%(153,942)25.3%(54,784)D+45.7R+3.9
200873.6%(168,888)24.0%(55,127)D+49.6D+13.3
200467.2%(148,261)30.9%(68,204)D+36.3D+9.0
200059.5%(117,295)32.3%(63,529)D+27.3D+1.3
199655.6%(100,738)29.5%(53,555)D+26.0R+2.7
199252.8%(104,334)24.1%(47,619)D+28.7D+14.1
198856.5%(91,262)41.9%(67,725)D+14.6D+18.0

Source: Official state election returns via MIT Election Data + Science Lab

Presidential Margin Trend

Sonoma County, CA • 1876–2024

D+R++60+40+200-20-40-601876188418921900190819161924193219401948195619641972198019881996200420122020
Democratic margin
Republican margin

Senate Elections

Senate Results

YearDemocratRepublicanMarginSwing
202472.0%(176,477)28.0%(68,712)D+44.0R+50.3
201894.2%(182,478)0.0%(0)D+94.2R+4.6
201698.8%(199,697)0.0%(0)D+98.8D+51.4
201273.7%(154,892)26.3%(55,256)D+47.4D+0.9
200669.5%(119,672)23.0%(39,619)D+46.5D+15.0
200061.0%(118,455)29.5%(57,244)D+31.5D+8.0
199457.5%(91,164)34.0%(53,938)D+23.5R+10.0
199262.8%(121,471)29.4%(56,793)D+33.5D+27.2
198851.2%(81,747)44.9%(71,775)D+6.2D+14.9
198243.2%(53,248)51.9%(63,846)R+8.6R+1.5

Source: Official state election returns via MIT Election Data + Science Lab

Governor Elections

Governor Results

YearDemocratRepublicanMarginSwing
202270.9%(140,041)29.1%(57,413)D+41.8R+2.7
201872.3%(152,040)27.7%(58,338)D+44.5R+5.0
201474.8%(107,328)25.2%(36,249)D+49.5D+14.9
201064.7%(119,079)30.1%(55,472)D+34.6D+37.0
200644.6%(77,392)47.0%(81,608)R+2.4R+22.9
200250.4%(73,079)29.9%(43,408)D+20.5R+14.8
199864.3%(103,235)29.0%(46,616)D+35.3D+31.2
199449.7%(79,720)45.6%(73,234)D+4.0R+13.2
199055.8%(79,093)38.6%(54,706)D+17.2D+38.7
198637.9%(47,859)59.4%(75,003)R+21.5R+27.6

Source: Official state election returns via MIT Election Data + Science Lab

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