Jefferson County, WA

WA · Presidential Elections 1892–2024

D+45.1
2024 Margin
D+3.6%
2020→2024 Swing
D since 1984
Voting Streak
34K
Population

Jefferson County, WA (Washington) voted D+45.1 for Kamala Harris (Democrat) in the 2024 presidential election, with Harris receiving 17,459 votes (70.69%) to 6,324 (25.61%) for Trump.

This represents a D+3.6% swing toward Democrats compared to 2020. Jefferson County is classified as a deep Democratic county. Jefferson County has voted Democratic in every presidential election since 1984. The county has a population of approximately 33,577.

Quick Stats

2024 ResultD+45.1
2020→2024 SwingD+3.6%
Voting StreakD since 1984
Elections on Record34

Demographics

Population33,577
Median Age
59.8(US: 38.7)
College (BA+)
43.9%(US: 35.2%)
Median Income
$74,048(US: $80k)
White (non-Hisp)
85.3%(US: 57.6%)
Hispanic
4.4%(US: 19.1%)
Asian
1.4%(US: 5.7%)
Homeownership
79.0%(US: 64.5%)
Poverty Rate
11.1%(US: 12.3%)
Veterans
11.7%(US: 6.2%)
Non-English (CVAP)
4.8%(US: 17.0%)
Source: Census ACS 5-Year (2020-2024)

Community Profile

Religious Composition

Source: Religion Census 2020
Evangelical
7.1%(Below Average)
Catholic
4.2%(Below Average)
Mainline Protestant
3.9%
LDS/Mormon
0.7%

Ancestry Groups

Source: Census ACS

Top reported ancestry groups (compared to national average).

English
19.8%Above Average(2.2x)
German
16.9%(1.4x)
Irish
15.9%Above Average(1.7x)
Italian
4.7%
American Heritage
3.9%
French
3.4%Above Average(1.8x)
+ 4 more reported ancestry groups

Age Distribution

Median:59.8 yrs(US: 38.5)
Under 18
11.2%↓
18-29
3.8%↓
30-44
12.6%↓
45-64
31.7%↑
65+
40.7%↑
National average

Employment by Industry

Census ACS
Professional & Technical
12.4%
Retail Trade
10.5%
Educational Services
9.9%(1.2x US)
Construction
7.9%(1.2x US)
Manufacturing
6.6%(0.7x US)
Healthcare & Social Services
5.7%(1.2x US)
National average
+ 1 more sectors

Presidential Elections

Presidential Results

YearDemocratRepublicanMarginSwing
202470.7%(17,459)25.6%(6,324)D+45.1D+3.6
202069.4%(17,204)28.0%(6,931)D+41.4D+9.7
201660.6%(12,656)28.9%(6,037)D+31.7R+0.0
201263.8%(12,739)32.1%(6,405)D+31.7R+2.9
200866.3%(13,252)31.7%(6,330)D+34.6D+8.0
200462.3%(11,610)35.7%(6,650)D+26.6D+12.8
200052.3%(8,281)38.5%(6,095)D+13.8R+4.2
199650.6%(7,145)32.6%(4,607)D+18.0R+2.7
199247.5%(6,148)26.8%(3,467)D+20.7D+9.4
198854.7%(5,270)43.4%(4,184)D+11.3D+10.6

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

Presidential Margin Trend

Jefferson County, WA • 1892–2024

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

Senate Elections

Senate Results

YearDemocratRepublicanMarginSwing
202472.3%(17,621)27.5%(6,708)D+44.8D+3.3
202270.6%(14,970)29.2%(6,185)D+41.4D+3.9
201868.8%(14,331)31.2%(6,502)D+37.6D+0.1
201668.8%(14,098)31.2%(6,408)D+37.5R+0.1
201268.8%(13,471)31.2%(6,114)D+37.6D+11.6
201063.0%(10,917)37.0%(6,413)D+26.0R+4.8
200663.2%(10,164)32.4%(5,212)D+30.8D+2.8
200462.7%(11,573)34.8%(6,415)D+27.9D+15.2
200055.0%(8,647)42.3%(6,647)D+12.7R+11.1
199861.9%(7,820)38.1%(4,813)D+23.8D+19.3

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

Governor Elections

Governor Results

YearDemocratRepublicanMarginSwing
202470.0%(17,201)29.8%(7,312)D+40.2D+2.4
202068.8%(16,992)31.0%(7,651)D+37.8D+6.9
201665.2%(13,399)34.3%(7,049)D+30.9D+6.3
201262.3%(12,176)37.7%(7,370)D+24.6R+2.6
200863.6%(12,588)36.4%(7,200)D+27.2D+9.0
200457.8%(10,650)39.6%(7,295)D+18.2R+7.7
200061.7%(9,712)35.8%(5,628)D+25.9D+7.6
199659.2%(8,268)40.8%(5,702)D+18.4D+8.8
199254.8%(7,047)45.2%(5,820)D+9.5R+22.3
198865.9%(6,378)34.1%(3,300)D+31.8D+24.4

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

ShareShareShare

Explore More

WA ResultsBiggest Swings 2024Flipped Counties 2024Bellwether CountiesNational Swing Map