Missouri State House District 8

State Legislative District Profile (Lower Chamber)

Overview

District ID
mo-hd-008
State
Missouri
Chamber
Lower chamber
District Code
008
Land Area
337.7 sq mi
Water Area
11.8 sq mi

Boundary

Boundary of Missouri State House District 8

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Clinton County185.26 sq mi54.9%44.2%
Clay County152.45 sq mi45.1%38.3%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Smithville city15.95 sq mi4.7%98.7%
Kansas City city11.11 sq mi3.3%3.5%
Lathrop city4.19 sq mi1.2%100.0%
Plattsburg city3.60 sq mi1.1%100.0%
Lawson city1.85 sq mi0.5%62.4%
Lake Arrowhead CDP1.28 sq mi0.4%100.0%
Gower city0.92 sq mi0.3%91.3%
Trimble city0.59 sq mi0.2%99.1%
Holt city0.45 sq mi0.1%86.5%
Grayson CDP0.42 sq mi0.1%100.0%
Paradise CDP0.40 sq mi0.1%99.9%
Excelsior Estates village0.03 sq mi<0.1%13.8%

Showing all 12 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
MO District 632,03383.4%4.2%96.7%
MO District 56,38716.6%0.8%3.3%

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

Voters

Registered Voters
30,263
Active Voters
28,425 (93.9%)

Party Registration

PartyVotersShare
Democratic3171.0%
Republican9093.0%
Unaffiliated8,94729.6%
Other parties350.1%
No party recorded20,05566.3%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–20264,459 (14.7%)0 (0.0%)0 (0.0%)
2023–202422,670 (74.9%)0 (0.0%)0 (0.0%)
2021–202213,709 (45.3%)0 (0.0%)0 (0.0%)
2019–202020,166 (66.6%)0 (0.0%)0 (0.0%)
2017–201815,225 (50.3%)0 (0.0%)0 (0.0%)
2015–201616,861 (55.7%)0 (0.0%)0 (0.0%)
2013–20149,054 (29.9%)0 (0.0%)0 (0.0%)
2011–201214,732 (48.7%)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
39,148 (± 1,169)
Median Age
42.8
Median Household Income
$97,188 (± $3,353)
High School Graduate or Higher (age 25+)
93.5%
Bachelor's Degree or Higher (age 25+)
32.1%

Population by Age

GroupPeopleShare
Under 188,88922.7%
18 to 6423,28759.5%
65 and over6,97217.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)7712.0%
White, not Hispanic35,73791.3%
Black, not Hispanic6721.7%
Asian, not Hispanic2340.6%
American Indian / Alaska Native, not Hispanic780.2%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic540.1%
Two or more races, not Hispanic1,6024.1%

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
38,926
Citizen Voting Age Population (CVAP)
30,074

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic38,23398.2%
Hispanic6951.8%
White36,32893.3%
Black5901.5%
Asian1810.5%
American Indian / Alaska Native780.2%
Native Hawaiian / Pacific Islander00.0%
Two or More Races580.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic29,58698.4%
Hispanic4911.6%
White28,44594.6%
Black6152.0%
Asian2190.7%
American Indian / Alaska Native2941.0%
Native Hawaiian / Pacific Islander10.0%
Two or More Races100.0%

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