Overview
- District ID
- wa-sd-037
- State
- Washington
- Chamber
- Upper chamber (state senate)
- District Code
- 037
- Land Area
- 18.5 sq mi
- Water Area
- 5.81 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
| County | Overlap | Share of district land | Share of county land |
|---|
| King County | 18.49 sq mi | 99.8% | 0.9% |
Showing all 1 county
Places
Showing all 3 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| WA District 9 | 145,322 | 92.7% | 18.9% | 94.3% |
| WA District 7 | 11,455 | 7.3% | 1.5% | 5.7% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 115,657
- Active Voters
- 105,368 (91.1%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 52,231 (45.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 79,669 (68.9%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 62,158 (53.7%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 73,684 (63.7%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 53,989 (46.7%) | 0 (0.0%) | 0 (0.0%) |
Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.
Browse the voter list for this district (premium access; sign-in required)
Source: Civitech voter file snapshot as of 01/02/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 164,798 (± 4,334)
- Median Age
- 37.5
- Median Household Income
- $100,083 (± $5,220)
- High School Graduate or Higher (age 25+)
- 89.6%
- Bachelor's Degree or Higher (age 25+)
- 53.2%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 28,501 | 17.3% |
| 18 to 64 | 111,259 | 67.5% |
| 65 and over | 25,038 | 15.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 15,441 | 9.4% |
| White, not Hispanic | 65,245 | 39.6% |
| Black, not Hispanic | 26,561 | 16.1% |
| Asian, not Hispanic | 41,616 | 25.3% |
| American Indian / Alaska Native, not Hispanic | 505 | 0.3% |
| Native Hawaiian / Pacific Islander, not Hispanic | 472 | 0.3% |
| Some other race, not Hispanic | 1,042 | 0.6% |
| Two or more races, not Hispanic | 13,916 | 8.4% |
Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.
Citizen Voting Age Population
- Total Citizen Population
- 147,315
- Citizen Voting Age Population (CVAP)
- 119,635
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 135,739 | 92.1% |
| Hispanic | 11,580 | 7.9% |
| White | 64,759 | 44.0% |
| Black | 24,802 | 16.8% |
| Asian | 33,030 | 22.4% |
| American Indian / Alaska Native | 493 | 0.3% |
| Native Hawaiian / Pacific Islander | 526 | 0.4% |
| Two or More Races | 2,471 | 1.7% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 111,858 | 93.5% |
| Hispanic | 7,772 | 6.5% |
| White | 55,728 | 46.6% |
| Black | 21,060 | 17.6% |
| Asian | 31,720 | 26.5% |
| American Indian / Alaska Native | 1,650 | 1.4% |
| Native Hawaiian / Pacific Islander | 528 | 0.4% |
| Two or More Races | 1,798 | 1.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
