Washington 12th State Senate District, Washington: Urban anchor district. In 2024, voted D+41%. Republican peak: R+52 in 1904.
Key facts
- 2024 presidential margin
- D+41MIT Election Lab
- Political archetype
- Urban anchorAkashic typology
- Population
- 1,095,9862024 5-year
- Median household income
- $119,3982024 5-year
- White (non-Hispanic)
- 57.2%2024 5-year
- Black
- 5.7%2024 5-year
- Hispanic / Latino
- 12.5%2024 5-year
- Peak Democratic margin
- D+43 in 2020MIT Election Lab
- Peak Republican margin
- R+52 in 1904MIT Election Lab
Constituent county margins for Legislative (Senate) District 12, WAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 373,619 | 149,142 | 544,464 | ||
| D | 405,379 | 156,802 | 579,173 | ||
| D | 314,752 | 124,666 | 485,795 | ||
| D | 297,219 | 147,604 | 458,369 | ||
| D | 290,421 | 139,623 | 437,114 | ||
| D | 255,726 | 157,195 | 419,246 | ||
| D | 210,092 | 140,192 | 370,231 | ||
| D | 184,510 | 114,874 | 341,767 | ||
| D | 169,471 | 103,248 | 355,841 | ||
| D | 152,998 | 135,642 | 292,598 | ||
| R | 130,180 | 154,496 | 288,224 | ||
| R | 103,342 | 124,881 | 267,838 | ||
| R | 110,253 | 124,222 | 244,034 | ||
| R | 91,826 | 132,247 | 233,007 | ||
| D | 97,699 | 96,493 | 209,112 | ||
| D | 119,880 | 77,686 | 199,551 | ||
| R | 92,596 | 98,780 | 194,576 | ||
| R | 75,492 | 94,656 | 172,257 | ||
| R | 73,339 | 89,965 | 165,541 | ||
| D | 65,494 | 58,791 | 131,561 | ||
| D | 72,675 | 53,596 | 127,415 | ||
| D | 64,971 | 45,743 | 112,105 | ||
| D | 63,928 | 31,126 | 97,668 | ||
| D | 50,882 | 30,663 | 87,569 | ||
| R | 20,816 | 46,297 | 68,667 | ||
| R | 4,025 | 28,818 | 53,949 | ||
| R | 8,525 | 27,553 | 50,095 | ||
| D | 23,630 | 19,064 | 45,546 | ||
| O | 9,478 | 7,294 | 35,268 | ||
| R | 6,847 | 10,983 | 19,510 | ||
| R | 2,594 | 9,993 | 14,119 | ||
| R | 3,951 | 4,939 | 9,273 | ||
| D | 3,436 | 2,741 | 6,244 | ||
| R | 2,113 | 2,697 | 6,299 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
12.5%
English
11.2%
Irish
8.7%
Italian
3.3%
American
2.8%
Scottish
2.4%
French
2.2%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 37.8 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$119,398
Legislative (Senate) District 12 ranks near the middle of US counties.
Legislative (Senate) District 12$119,398
Washington$98,141
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.5%
Child poverty is below the national average.
Children under 189.6%
Working age (18–64)8.1%
Seniors (65+)10.2%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
70.4%
speak English only
Asian & Pacific Islander11.7%
Spanish8.4%
Other Indo-European7.0%
Other languages2.6%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 58.4% of residents not counted as adherents by any reporting body.
Washington's 12th Senate District sits near the competitive suburban fringe where presidential margins have tightened in recent cycles, making it a reliable bellwether for statewide shifts in the Puget Sound region.
The Democratic margin in Washington 12th State Senate District has been steady. It reached its modern peak at forty-three points in 2020; the 2024 margin was forty-one points, still in line with the district's long pattern.
Its political identity is inseparable from its demographic profile: a 57% non-Hispanic-white share, a median household income of $119,398, and the full diversity of a major metropolitan center.
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.
Legislative (Senate) District 12, Washington. Akashic. https://akashic.app/sld-upper/53012/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Legislative (Senate) District 12, Washington vote in 2024?
In 2024, Legislative (Senate) District 12, Washington voted Democratic by 41.2 points (D+41), carried by the Democratic candidate. Out of 544,464 votes cast, 373,619 went Democratic and 149,142 went Republican.
What is Legislative (Senate) District 12, Washington's political archetype?
Akashic classifies Legislative (Senate) District 12, Washington as a "Urban anchor" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 19 times, Republican 14 times, and other 1 times.
When did Legislative (Senate) District 12, Washington last vote Republican?
The most recent presidential election in which Legislative (Senate) District 12, Washington voted Republican was 1984.
How many people live in Legislative (Senate) District 12, Washington?
Legislative (Senate) District 12, Washington has a population of 1,095,986 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Legislative (Senate) District 12, Washington?
Median household income in Legislative (Senate) District 12, Washington is $119,398 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Legislative (Senate) District 12, Washington?
Akashic tracks 38 presidential elections in Legislative (Senate) District 12, Washington from 1876 to 2024. Of those, 19 went Democratic and 14 went Republican. The district's archetype — "Urban anchor" — captures the overall trajectory of that voting record.