Overview
- District ID
- wi-sd-004
- State
- Wisconsin
- Chamber
- Upper chamber (state senate)
- District Code
- 004
- Land Area
- 45.1 sq mi
- Water Area
- 0.35 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 |
|---|
| Milwaukee County | 45.15 sq mi | 100.0% | 18.7% |
Showing all 1 county
Places
Showing all 5 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 |
|---|
| WI District 4 | 178,419 | 100.0% | 24.2% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 100,679
- Active Voters
- 100,679 (100.0%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 80,041 (79.5%) | 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 05/15/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 180,152 (± 3,409)
- Median Age
- 33.4
- Median Household Income
- $51,824 (± $1,937)
- High School Graduate or Higher (age 25+)
- 89.2%
- Bachelor's Degree or Higher (age 25+)
- 27.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 51,599 | 28.6% |
| 18 to 64 | 103,409 | 57.4% |
| 65 and over | 25,144 | 14.0% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 11,113 | 6.2% |
| White, not Hispanic | 43,566 | 24.2% |
| Black, not Hispanic | 106,742 | 59.3% |
| Asian, not Hispanic | 10,901 | 6.1% |
| American Indian / Alaska Native, not Hispanic | 588 | 0.3% |
| Native Hawaiian / Pacific Islander, not Hispanic | 4 | 0.0% |
| Some other race, not Hispanic | 812 | 0.5% |
| Two or more races, not Hispanic | 6,426 | 3.6% |
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
- 176,072
- Citizen Voting Age Population (CVAP)
- 124,724
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 166,261 | 94.4% |
| Hispanic | 9,809 | 5.6% |
| White | 43,973 | 25.0% |
| Black | 106,131 | 60.3% |
| Asian | 9,722 | 5.5% |
| American Indian / Alaska Native | 594 | 0.3% |
| Native Hawaiian / Pacific Islander | 3 | 0.0% |
| Two or More Races | 907 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 119,061 | 95.5% |
| Hispanic | 5,662 | 4.5% |
| White | 38,399 | 30.8% |
| Black | 72,742 | 58.3% |
| Asian | 6,449 | 5.2% |
| American Indian / Alaska Native | 1,133 | 0.9% |
| Native Hawaiian / Pacific Islander | 5 | 0.0% |
| Two or More Races | 587 | 0.5% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
