Overview
- District ID
- mo-sd-004
- State
- Missouri
- Chamber
- Upper chamber (state senate)
- District Code
- 004
- Land Area
- 34.2 sq mi
- Water Area
- 0.11 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 9 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 |
|---|
| MO District 1 | 153,602 | 83.4% | 20.0% | 80.9% |
| MO District 2 | 30,639 | 16.6% | 4.0% | 19.1% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 136,976
- Active Voters
- 127,948 (93.4%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 7,757 | 5.7% |
| Republican | 1,660 | 1.2% |
| Unaffiliated | 4,588 | 3.3% |
| Other parties | 137 | 0.1% |
| No party recorded | 122,834 | 89.7% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 34,919 (25.5%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 94,654 (69.1%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 72,208 (52.7%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 90,841 (66.3%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 74,219 (54.2%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 74,075 (54.1%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 34,967 (25.5%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 61,778 (45.1%) | 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 01/02/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 178,567 (± 2,882)
- Median Age
- 37.4
- Median Household Income
- $75,175 (± $2,186)
- High School Graduate or Higher (age 25+)
- 95.5%
- Bachelor's Degree or Higher (age 25+)
- 56.7%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 30,608 | 17.1% |
| 18 to 64 | 119,089 | 66.7% |
| 65 and over | 28,870 | 16.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 8,920 | 5.0% |
| White, not Hispanic | 123,891 | 69.4% |
| Black, not Hispanic | 26,318 | 14.7% |
| Asian, not Hispanic | 9,360 | 5.2% |
| American Indian / Alaska Native, not Hispanic | 175 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 26 | 0.0% |
| Some other race, not Hispanic | 870 | 0.5% |
| Two or more races, not Hispanic | 9,007 | 5.0% |
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
- 170,302
- Citizen Voting Age Population (CVAP)
- 140,299
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 163,124 | 95.8% |
| Hispanic | 7,178 | 4.2% |
| White | 124,687 | 73.2% |
| Black | 25,554 | 15.0% |
| Asian | 5,973 | 3.5% |
| American Indian / Alaska Native | 173 | 0.1% |
| Native Hawaiian / Pacific Islander | 14 | 0.0% |
| Two or More Races | 817 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 135,310 | 96.4% |
| Hispanic | 4,992 | 3.6% |
| White | 106,340 | 75.8% |
| Black | 21,704 | 15.5% |
| Asian | 5,956 | 4.2% |
| American Indian / Alaska Native | 1,024 | 0.7% |
| Native Hawaiian / Pacific Islander | 13 | 0.0% |
| Two or More Races | 520 | 0.4% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
