Overview
- District ID
- wa-sd-045
- State
- Washington
- Chamber
- Upper chamber (state senate)
- District Code
- 045
- Land Area
- 98.6 sq mi
- Water Area
- 5.05 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 | 98.50 sq mi | 99.9% | 4.7% |
Showing all 1 county
Places
Showing all 7 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 1 | 84,651 | 53.8% | 11.0% | 20.4% |
| WA District 8 | 72,580 | 46.2% | 9.4% | 79.6% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 107,597
- Active Voters
- 100,720 (93.6%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 44,596 (41.4%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 82,604 (76.8%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 64,320 (59.8%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 74,074 (68.8%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 56,392 (52.4%) | 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
- 158,714 (± 2,676)
- Median Age
- 39.6
- Median Household Income
- $180,159 (± $7,430)
- High School Graduate or Higher (age 25+)
- 97.3%
- Bachelor's Degree or Higher (age 25+)
- 69.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 37,170 | 23.4% |
| 18 to 64 | 99,123 | 62.5% |
| 65 and over | 22,421 | 14.1% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 12,490 | 7.9% |
| White, not Hispanic | 94,125 | 59.3% |
| Black, not Hispanic | 2,271 | 1.4% |
| Asian, not Hispanic | 38,019 | 24.0% |
| American Indian / Alaska Native, not Hispanic | 399 | 0.3% |
| Native Hawaiian / Pacific Islander, not Hispanic | 183 | 0.1% |
| Some other race, not Hispanic | 1,112 | 0.7% |
| Two or more races, not Hispanic | 10,115 | 6.4% |
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
- 133,956
- Citizen Voting Age Population (CVAP)
- 100,250
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 123,970 | 92.5% |
| Hispanic | 9,981 | 7.5% |
| White | 90,031 | 67.2% |
| Black | 2,137 | 1.6% |
| Asian | 23,744 | 17.7% |
| American Indian / Alaska Native | 398 | 0.3% |
| Native Hawaiian / Pacific Islander | 171 | 0.1% |
| Two or More Races | 1,325 | 1.0% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 94,043 | 93.8% |
| Hispanic | 6,210 | 6.2% |
| White | 72,534 | 72.4% |
| Black | 2,183 | 2.2% |
| Asian | 17,176 | 17.1% |
| American Indian / Alaska Native | 1,178 | 1.2% |
| Native Hawaiian / Pacific Islander | 142 | 0.1% |
| Two or More Races | 835 | 0.8% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
