Kansas State House District 21

State Legislative District Profile (Lower Chamber)

Overview

District ID
ks-hd-021
State
Kansas
Chamber
Lower chamber
District Code
021
Land Area
5.84 sq mi
Water Area
0 sq mi

Boundary

Boundary of Kansas State House District 21

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Johnson County5.84 sq mi100.0%1.2%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Prairie Village city4.11 sq mi70.3%66.2%
Overland Park city1.73 sq mi29.7%2.3%

Showing all 2 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
KS District 323,871100.0%3.3%100.0%

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

Voters

Registered Voters
19,149
Active Voters
17,978 (93.9%)

Party Registration

PartyVotersShare
Democratic7,82740.9%
Republican6,13732.0%
Unaffiliated4,92325.7%
Other parties2621.4%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202414,626 (76.4%)0 (0.0%)0 (0.0%)
2021–202211,283 (58.9%)0 (0.0%)0 (0.0%)
2019–202013,272 (69.3%)0 (0.0%)0 (0.0%)
2017–201810,145 (53.0%)0 (0.0%)0 (0.0%)
2015–201610,000 (52.2%)0 (0.0%)0 (0.0%)
2013–20146,539 (34.1%)0 (0.0%)0 (0.0%)
2011–20127,471 (39.0%)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 11/03/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
22,933 (± 909)
Median Age
40.5
Median Household Income
$95,170 (± $8,048)
High School Graduate or Higher (age 25+)
97.6%
Bachelor's Degree or Higher (age 25+)
62.8%

Population by Age

GroupPeopleShare
Under 184,57219.9%
18 to 6413,36658.3%
65 and over4,99521.8%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)1,5626.8%
White, not Hispanic19,41784.7%
Black, not Hispanic2671.2%
Asian, not Hispanic5652.5%
American Indian / Alaska Native, not Hispanic300.1%
Native Hawaiian / Pacific Islander, not Hispanic130.1%
Some other race, not Hispanic00.0%
Two or more races, not Hispanic1,0794.7%

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
22,678
Citizen Voting Age Population (CVAP)
18,113

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic21,17893.4%
Hispanic1,4956.6%
White19,53986.2%
Black2661.2%
Asian4832.1%
American Indian / Alaska Native300.1%
Native Hawaiian / Pacific Islander140.1%
Two or More Races700.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic17,13494.6%
Hispanic9745.4%
White16,06288.7%
Black3271.8%
Asian5703.1%
American Indian / Alaska Native1030.6%
Native Hawaiian / Pacific Islander80.0%
Two or More Races700.4%

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