Overview
- District ID
- wa-sd-012
- State
- Washington
- Chamber
- Upper chamber (state senate)
- District Code
- 012
- Land Area
- 4,155.1 sq mi
- Water Area
- 90.9 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
Showing all 3 counties
Places
Showing top 25 of 28 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 8 | 134,674 | 84.7% | 17.5% | 99.5% |
| WA District 1 | 24,412 | 15.3% | 3.2% | 0.5% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 117,419
- Active Voters
- 111,012 (94.5%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 41,459 (35.3%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 89,145 (75.9%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 71,015 (60.5%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 83,806 (71.4%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 62,882 (53.6%) | 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
- 159,840 (± 2,337)
- Median Age
- 39.8
- Median Household Income
- $106,724 (± $3,627)
- High School Graduate or Higher (age 25+)
- 90.5%
- Bachelor's Degree or Higher (age 25+)
- 37.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 37,603 | 23.5% |
| 18 to 64 | 95,392 | 59.7% |
| 65 and over | 26,845 | 16.8% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 31,388 | 19.6% |
| White, not Hispanic | 110,417 | 69.1% |
| Black, not Hispanic | 1,419 | 0.9% |
| Asian, not Hispanic | 6,470 | 4.0% |
| American Indian / Alaska Native, not Hispanic | 974 | 0.6% |
| Native Hawaiian / Pacific Islander, not Hispanic | 175 | 0.1% |
| Some other race, not Hispanic | 860 | 0.5% |
| Two or more races, not Hispanic | 8,137 | 5.1% |
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
- 146,645
- Citizen Voting Age Population (CVAP)
- 110,750
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 123,854 | 84.5% |
| Hispanic | 22,792 | 15.5% |
| White | 111,858 | 76.3% |
| Black | 1,242 | 0.8% |
| Asian | 3,975 | 2.7% |
| American Indian / Alaska Native | 978 | 0.7% |
| Native Hawaiian / Pacific Islander | 151 | 0.1% |
| Two or More Races | 962 | 0.7% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 97,967 | 88.5% |
| Hispanic | 12,792 | 11.6% |
| White | 90,173 | 81.4% |
| Black | 1,405 | 1.3% |
| Asian | 3,466 | 3.1% |
| American Indian / Alaska Native | 2,200 | 2.0% |
| Native Hawaiian / Pacific Islander | 139 | 0.1% |
| Two or More Races | 591 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
