Overview
- District ID
- mo-hd-108
- State
- Missouri
- Chamber
- Lower chamber
- District Code
- 108
- Land Area
- 15.4 sq mi
- Water Area
- 0.81 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 |
|---|
| St. Charles County | 15.44 sq mi | 100.0% | 2.8% |
Showing all 1 county
Places
Showing all 3 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 2 | 25,417 | 69.0% | 3.3% | 73.3% |
| MO District 3 | 11,409 | 31.0% | 1.5% | 26.7% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 28,254
- Active Voters
- 26,640 (94.3%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 575 | 2.0% |
| Republican | 1,130 | 4.0% |
| Unaffiliated | 841 | 3.0% |
| Other parties | 38 | 0.1% |
| No party recorded | 25,670 | 90.9% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2025–2026 | 4,973 (17.6%) | 0 (0.0%) | 0 (0.0%) |
| 2023–2024 | 21,884 (77.5%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 14,374 (50.9%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 19,449 (68.8%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 14,677 (51.9%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 16,650 (58.9%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 8,766 (31.0%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 14,437 (51.1%) | 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
- 40,080 (± 1,306)
- Median Age
- 39.2
- Median Household Income
- $128,574 (± $5,924)
- High School Graduate or Higher (age 25+)
- 97.2%
- Bachelor's Degree or Higher (age 25+)
- 48.8%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 10,230 | 25.5% |
| 18 to 64 | 23,880 | 59.6% |
| 65 and over | 5,970 | 14.9% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 1,465 | 3.7% |
| White, not Hispanic | 33,443 | 83.4% |
| Black, not Hispanic | 2,109 | 5.3% |
| Asian, not Hispanic | 1,174 | 2.9% |
| American Indian / Alaska Native, not Hispanic | 10 | 0.0% |
| Native Hawaiian / Pacific Islander, not Hispanic | 14 | 0.0% |
| Some other race, not Hispanic | 139 | 0.3% |
| Two or more races, not Hispanic | 1,726 | 4.3% |
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
- 39,431
- Citizen Voting Age Population (CVAP)
- 29,230
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 38,109 | 96.6% |
| Hispanic | 1,317 | 3.3% |
| White | 34,151 | 86.6% |
| Black | 2,187 | 5.5% |
| Asian | 857 | 2.2% |
| American Indian / Alaska Native | 10 | 0.0% |
| Native Hawaiian / Pacific Islander | 17 | 0.0% |
| Two or More Races | 34 | 0.1% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 28,294 | 96.8% |
| Hispanic | 933 | 3.2% |
| White | 25,536 | 87.4% |
| Black | 1,919 | 6.6% |
| Asian | 615 | 2.1% |
| American Indian / Alaska Native | 203 | 0.7% |
| Native Hawaiian / Pacific Islander | 15 | 0.1% |
| Two or More Races | 12 | 0.0% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
