King County, WA

WA · Presidential Elections 1892–2024

D+51.3
2024 Margin
R+1.4%
2020→2024 Swing
D since 1988
Voting Streak
2.3M
Population

King County, WA (Washington) voted D+51.3 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 832,606 votes (73.65%) to 252,193 (22.31%) for Trump.

This represents a R+1.4% swing toward Republicans compared to 2020. King County is classified as a deep Democratic county. King County has voted Democratic in every presidential election since 1988. The county has a population of approximately 2,287,171.

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Quick Stats

2024 ResultD+51.3
2020→2024 SwingR+1.4%
Voting StreakD since 1988
Elections on Record34

Demographics

Population2,287,171
Median Age
37.4(US: 38.7)
College (BA+)
56.7%(US: 35.2%)
Median Income
$124,746(US: $80k)
White (non-Hisp)
54.3%(US: 57.6%)
Hispanic
11.0%(US: 19.1%)
Black
6.7%(US: 12.2%)
Asian
19.4%(US: 5.7%)
Homeownership
55.5%(US: 64.5%)
Poverty Rate
8.6%(US: 12.3%)
Veterans
4.5%(US: 6.2%)
Non-English (CVAP)
19.6%(US: 17.0%)
Source: Census ACS 5-Year (2020-2024)

Community Profile

Religious Composition

Source: Religion Census 2020
Evangelical
15.6%
Catholic
12.6%(Below Average)
Mainline Protestant
3.3%
LDS/Mormon
2.0%
Black Protestant
0.8%
+ 1 more traditions

Ancestry Groups

Source: Census ACS

Top reported ancestry groups (compared to national average).

German
12.0%
English
11.0%(1.2x)
Irish
8.6%
Mexican
7.1%
Italian
3.4%
Sub-Saharan African
2.9%Above Average(2.4x)
+ 5 more reported ancestry groups

Age Distribution

Median:37.4 yrs(US: 38.5)
Under 18
19.5%↓
18-29
8.0%↓
30-44
26.9%↑
45-64
31.5%↑
65+
14.0%↓
National average

Employment by Industry

Census ACS
Professional & TechnicalMajor Specialization
22.1%(1.9x US)
Retail Trade
11.8%(1.1x US)
Educational Services
8.0%
Manufacturing
7.9%(0.8x US)
Construction
5.1%(0.8x US)
Healthcare & Social Services
4.0%(0.9x US)
National average

Presidential Elections

Presidential Results

YearDemocratRepublicanMarginSwing
202473.7%(832,606)22.3%(252,193)D+51.3R+1.4
202075.0%(907,310)22.2%(269,167)D+52.7D+3.9
201669.8%(718,322)21.0%(216,339)D+48.8D+8.5
201268.7%(668,004)28.4%(275,700)D+40.4R+1.8
200870.3%(648,230)28.2%(259,716)D+42.1D+10.9
200464.9%(580,378)33.6%(301,043)D+31.2D+5.6
200060.0%(476,700)34.4%(273,171)D+25.6D+0.7
199656.4%(417,846)31.4%(232,811)D+25.0D+2.1
199250.2%(391,050)27.4%(212,986)D+22.9D+13.8
198853.9%(349,663)44.8%(290,574)D+9.1D+14.5

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

Presidential Margin Trend

King County, WA • 1892–2024

D+R++60+40+200-20-40-6018921900190819161924193219401948195619641972198019881996200420122020
Democratic margin
Republican margin

Senate Elections

Senate Results

YearDemocratRepublicanMarginSwing
202475.1%(828,204)24.6%(271,832)D+50.4D+0.1
202275.1%(668,692)24.7%(220,307)D+50.3D+2.0
201874.1%(708,654)25.9%(247,071)D+48.3D+2.9
201672.7%(728,113)27.3%(273,410)D+45.4D+0.9
201272.3%(683,067)27.7%(262,034)D+44.5D+14.7
201064.9%(489,190)35.1%(264,368)D+29.8R+6.5
200666.6%(419,898)30.2%(190,678)D+36.3D+3.8
200465.2%(573,506)32.7%(287,456)D+32.5D+12.9
200058.7%(459,605)39.1%(306,251)D+19.6R+14.6
199867.1%(405,177)32.9%(198,592)D+34.2D+29.9

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

Governor Elections

Governor Results

YearDemocratRepublicanMarginSwing
202471.6%(797,248)28.2%(314,226)D+43.4R+5.1
202074.1%(887,374)25.6%(307,022)D+48.4D+12.8
201667.7%(677,943)32.1%(321,242)D+35.6D+10.9
201262.4%(590,879)37.6%(356,713)D+24.7R+3.6
200864.2%(583,357)35.8%(325,820)D+28.3D+10.7
200457.8%(506,194)40.1%(351,306)D+17.7R+17.0
200066.5%(522,229)31.8%(250,103)D+34.6D+0.6
199667.0%(490,284)33.0%(241,134)D+34.1D+13.2
199260.4%(466,506)39.6%(305,326)D+20.9R+18.9
198869.9%(453,572)30.1%(195,378)D+39.8D+35.1

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

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