Overview
- District ID
- mi-sd-004
- State
- Michigan
- Chamber
- Upper chamber (state senate)
- District Code
- 004
- Land Area
- 226.6 sq mi
- Water Area
- 23.9 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 |
|---|
| Wayne County | 226.58 sq mi | 100.0% | 37.0% |
Showing all 1 county
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 |
|---|
| MI District 6 | 167,722 | 62.1% | 21.6% | 75.0% |
| MI District 13 | 102,488 | 37.9% | 13.2% | 25.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 224,928
- Active Voters
- 213,800 (95.1%)
Party Registration
This state's voter file does not record party registration.
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 25,160 (11.2%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 154,571 (68.7%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 116,986 (52.0%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 141,070 (62.7%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 101,832 (45.3%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 110,440 (49.1%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 67,228 (29.9%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 99,151 (44.1%) | 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 01/01/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 266,275 (± 678)
- Median Age
- 41.7
- Median Household Income
- $77,120 (± $1,665)
- High School Graduate or Higher (age 25+)
- 92.2%
- Bachelor's Degree or Higher (age 25+)
- 25.4%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 55,820 | 21.0% |
| 18 to 64 | 159,029 | 59.7% |
| 65 and over | 51,426 | 19.3% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 16,673 | 6.3% |
| White, not Hispanic | 193,209 | 72.6% |
| Black, not Hispanic | 35,953 | 13.5% |
| Asian, not Hispanic | 5,256 | 2.0% |
| American Indian / Alaska Native, not Hispanic | 480 | 0.2% |
| Native Hawaiian / Pacific Islander, not Hispanic | 51 | 0.0% |
| Some other race, not Hispanic | 967 | 0.4% |
| Two or more races, not Hispanic | 13,686 | 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
- 261,505
- Citizen Voting Age Population (CVAP)
- 205,951
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 245,986 | 94.1% |
| Hispanic | 15,517 | 5.9% |
| White | 194,757 | 74.5% |
| Black | 35,921 | 13.7% |
| Asian | 4,095 | 1.6% |
| American Indian / Alaska Native | 409 | 0.2% |
| Native Hawaiian / Pacific Islander | 52 | 0.0% |
| Two or More Races | 613 | 0.2% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 196,059 | 95.2% |
| Hispanic | 9,893 | 4.8% |
| White | 159,501 | 77.4% |
| Black | 29,891 | 14.5% |
| Asian | 3,875 | 1.9% |
| American Indian / Alaska Native | 3,024 | 1.5% |
| Native Hawaiian / Pacific Islander | 51 | 0.0% |
| Two or More Races | 242 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
