Washington Legislative (Senate) District 4

State Legislative District Profile (Upper Chamber)

Overview

District ID
wa-sd-004
State
Washington
Chamber
Upper chamber (state senate)
District Code
004
Land Area
396.1 sq mi
Water Area
2.6 sq mi

Boundary

Boundary of Washington Legislative (Senate) District 4

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Spokane County396.07 sq mi100.0%22.4%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Spokane Valley city37.72 sq mi9.5%100.0%
Otis Orchards-East Farms CDP8.03 sq mi2.0%100.0%
Green Bluff CDP7.07 sq mi1.8%100.0%
Liberty Lake city6.25 sq mi1.6%98.5%
Mead CDP4.54 sq mi1.1%62.5%
Millwood city0.70 sq mi0.2%100.0%

Showing all 6 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
WA District 5157,051100.0%20.3%100.0%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
123,781
Active Voters
113,879 (92.0%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202639,372 (31.8%)0 (0.0%)0 (0.0%)
2023–202487,848 (71.0%)0 (0.0%)0 (0.0%)
2021–202266,125 (53.4%)0 (0.0%)0 (0.0%)
2019–202081,540 (65.9%)0 (0.0%)0 (0.0%)
2017–201859,733 (48.3%)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
162,056 (± 2,109)
Median Age
39.7
Median Household Income
$81,659 (± $2,124)
High School Graduate or Higher (age 25+)
94.9%
Bachelor's Degree or Higher (age 25+)
28.8%

Population by Age

GroupPeopleShare
Under 1835,54221.9%
18 to 6496,59759.6%
65 and over29,91718.5%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)10,0226.2%
White, not Hispanic135,63183.7%
Black, not Hispanic1,5220.9%
Asian, not Hispanic2,6291.6%
American Indian / Alaska Native, not Hispanic9150.6%
Native Hawaiian / Pacific Islander, not Hispanic8470.5%
Some other race, not Hispanic7460.5%
Two or more races, not Hispanic9,7446.0%

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
159,016
Citizen Voting Age Population (CVAP)
123,751

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic149,90994.3%
Hispanic9,1095.7%
White137,46286.4%
Black1,4100.9%
Asian2,2731.4%
American Indian / Alaska Native9120.6%
Native Hawaiian / Pacific Islander4650.3%
Two or More Races8670.5%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic118,12995.5%
Hispanic5,6224.5%
White109,59788.6%
Black1,7051.4%
Asian3,4712.8%
American Indian / Alaska Native2,6922.2%
Native Hawaiian / Pacific Islander2850.2%
Two or More Races3970.3%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).