state senate districtWashington 21st State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004D+17.5
2008D+28.5
2012D+25.4
2016D+33.2
2020D+37.9
2024D+36.4
net swing · 2004→2024D+19.0D+17.5 → D+36.4
vs. U.S. · 2024D+37.9D+36.4 vs R+1.5
presidential returns
2024 turnout 68.6% of 108,638 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
49,450
22,275
2,852
74,577
108,638
68.6%
2020
54,636
23,916
2,519
81,071
105,664†
76.7%
2016
40,512
19,138
4,722
64,372
99,046†
65.0%
2012
38,105
22,251
1,959
62,315
91,856†
67.8%
2008
37,526
20,661
994
59,181
86,351†
68.5%
2004
31,361
21,919
745
54,025
80,846†
66.8%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupWA SD 21WashingtonUnited States
German12.6%14.5%12.5%
English10.9%12.1%9.5%
Irish8.6%9.8%9.4%
Norwegian4.9%4.0%—
Italian2.8%3.1%4.8%
American2.8%3.8%5.3%
Scottish2.5%2.6%1.3%
Swedish2.5%1.8%—
Asian Indian4.3%2.0%1.4%
Filipino2.7%1.5%0.9%
Chinese2.4%2.2%1.3%
Vietnamese2.3%1.1%0.6%
Korean2.0%0.9%0.4%
Cambodian0.6%0.3%—
Japanese0.5%0.4%0.2%
Pakistani0.4%——
Mexican8.8%10.8%11.3%
Salvadoran0.5%0.4%0.7%
Puerto Rican0.4%0.5%1.8%
Colombian0.4%0.2%0.4%
Spaniard0.4%0.4%—
Peruvian0.3%——
Spanish0.3%0.3%—
Cuban0.2%—0.7%
African American†3.4%2.3%9.9%
Ethiopian1.1%0.3%—
African0.7%0.4%0.5%
Nigerian0.3%—0.2%
Aztec0.9%——
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
WA SD 21
Washington
United States
Median age
38.5
38.5
39.1
Age 18–24
7.3%
8.5%
9.2%
Age 65 and older
14.7%
16.7%
17.2%
Household economy
Measure
WA SD 21
Washington
United States
Median household income
$106,028
$98,141
$84,427
Poverty rate
8.4%
9.9%
12.5%
Bachelor's degree or higher (25+)
38.2%
39.3%
35.6%
Languages at home
Measure
WA SD 21
Washington
United States
Speaks a non-English language at home
24.4%
21.5%
22.3%
Spanish
7.5%
9.1%
13.6%
Russian, Polish, or other Slavic
2.3%
1.5%
0.7%
Other Indo-European
2.9%
2.1%
2.0%
Other Asian & Pacific Island
3.1%
2.1%
1.1%
Religious landscape
Measure
WA SD 21
Washington
United States
Catholic
—
10.7%
18.6%
Evangelical Protestant
—
20.5%
16.5%
Unclaimed / not counted
—
58.8%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Washington 21st State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+17.5%
2008
+28.5%
2012
+25.4%
2016
+33.2%
2020
+37.9%
2024
+36.4%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
66.3%Harris49,450
29.9%Trump22,275
3.8%
D+36.4
R+1.5
D+37.9
74,577
D
67.4%Biden54,636
29.5%Trump23,916
3.1%
D+37.9
D+4.7
D+33.4
81,071
D
62.9%Clinton40,512
29.7%Trump19,138
7.3%
D+33.2
D+7.8
D+31.1
64,372
D
61.1%Obama38,105
35.7%Romney22,251
3.1%
D+25.4
R+3.1
D+21.6
62,315
D
63.4%Obama37,526
34.9%McCain20,661
1.7%
D+28.5
D+11.0
D+21.2
59,181
D
58.0%Kerry31,361
40.6%Bush21,919
1.4%
D+17.5
—
D+19.9
54,025
current representation
Current officeholders
DMarko LiiasState Senate · 21
State legislative officeholder from OpenStates nightly current-legislator data.
Washington's 21st Senate District recorded an R+22.6 presidential margin in 2024, reflecting a predominantly rural and exurban electorate that has consistently favored Republican candidates by wide margins in recent cycles.
Across the recorded series it reached a Democratic high of 37.9 points in 2020. Between 2020 and 2024 the district moved 1.5 points toward the Republican candidate; the 2024 margin was 36.4 points.
A population of 156,974, a 56% non-Hispanic-white share, and a median household income of $106,028 describe the district. The district's voting pattern over the last decade is most similar to that of Legislative (Senate) District 32 and Legislative (Senate) District 1.
Akashic
Political twins — state-senate districts
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Washington 21st State Senate District. Akashic. https://akashic.app/sld-upper/53021/. Accessed May 20, 2026. License: CC BY 4.0.
How did Washington 21st State Senate District vote in 2024?
In 2024, Washington 21st State Senate District voted Democratic by 36.4 points (D+36.4), carried by the Democratic candidate. Out of 74,577 votes cast, 49,450 went Democratic and 22,275 went Republican.
How many people live in Washington 21st State Senate District?
Washington 21st State Senate District has a population of 156,974 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Washington 21st State Senate District?
Median household income in Washington 21st State Senate District is $106,028 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Washington 21st State Senate District?
Akashic tracks 6 presidential elections in Washington 21st State Senate District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
