Overview
- District ID
- wa-sd-001
- State
- Washington
- Chamber
- Upper chamber (state senate)
- District Code
- 001
- Land Area
- 51.6 sq mi
- Water Area
- 2.53 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 2 counties
Places
Showing all 12 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 | 140,948 | 89.7% | 18.3% | 89.0% |
| WA District 7 | 13,630 | 8.7% | 1.8% | 6.8% |
| WA District 8 | 2,623 | 1.7% | 0.3% | 4.2% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 110,600
- Active Voters
- 103,700 (93.8%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 45,398 (41.0%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 85,733 (77.5%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 67,791 (61.3%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 79,686 (72.0%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 60,049 (54.3%) | 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
- 161,162 (± 2,690)
- Median Age
- 39.4
- Median Household Income
- $149,329 (± $5,716)
- High School Graduate or Higher (age 25+)
- 96.2%
- Bachelor's Degree or Higher (age 25+)
- 59.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 36,125 | 22.4% |
| 18 to 64 | 100,323 | 62.2% |
| 65 and over | 24,714 | 15.3% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 12,398 | 7.7% |
| White, not Hispanic | 101,787 | 63.2% |
| Black, not Hispanic | 3,992 | 2.5% |
| Asian, not Hispanic | 30,090 | 18.7% |
| American Indian / Alaska Native, not Hispanic | 377 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 259 | 0.2% |
| Some other race, not Hispanic | 1,264 | 0.8% |
| Two or more races, not Hispanic | 10,995 | 6.8% |
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
- 143,584
- Citizen Voting Age Population (CVAP)
- 108,889
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 134,134 | 93.4% |
| Hispanic | 9,449 | 6.6% |
| White | 101,390 | 70.6% |
| Black | 3,694 | 2.6% |
| Asian | 19,819 | 13.8% |
| American Indian / Alaska Native | 372 | 0.3% |
| Native Hawaiian / Pacific Islander | 270 | 0.2% |
| Two or More Races | 1,691 | 1.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 102,917 | 94.5% |
| Hispanic | 5,977 | 5.5% |
| White | 80,944 | 74.3% |
| Black | 3,419 | 3.1% |
| Asian | 15,898 | 14.6% |
| American Indian / Alaska Native | 1,406 | 1.3% |
| Native Hawaiian / Pacific Islander | 268 | 0.2% |
| Two or More Races | 998 | 0.9% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
