Overview
- District ID
- ks-sd-021
- State
- Kansas
- Chamber
- Upper chamber (state senate)
- District Code
- 021
- Land Area
- 28.7 sq mi
- Water Area
- 0.13 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 |
|---|
| Johnson County | 28.66 sq mi | 100.0% | 6.1% |
Showing all 1 county
Places
Showing all 4 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 |
|---|
| KS District 3 | 74,509 | 100.0% | 10.1% | 100.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 52,934
- Active Voters
- 48,031 (90.7%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 19,196 | 36.3% |
| Republican | 17,855 | 33.7% |
| Unaffiliated | 14,952 | 28.2% |
| Other parties | 931 | 1.8% |
| No party recorded | 0 | 0.0% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 38,055 (71.9%) | 0 (0.0%) | 0 (0.0%) |
| 2021–2022 | 28,094 (53.1%) | 0 (0.0%) | 0 (0.0%) |
| 2019–2020 | 35,291 (66.7%) | 0 (0.0%) | 0 (0.0%) |
| 2017–2018 | 26,336 (49.8%) | 0 (0.0%) | 0 (0.0%) |
| 2015–2016 | 26,475 (50.0%) | 0 (0.0%) | 0 (0.0%) |
| 2013–2014 | 16,486 (31.1%) | 0 (0.0%) | 0 (0.0%) |
| 2011–2012 | 20,408 (38.6%) | 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
- 73,210 (± 1,785)
- Median Age
- 35.8
- Median Household Income
- $81,315 (± $3,065)
- High School Graduate or Higher (age 25+)
- 95.4%
- Bachelor's Degree or Higher (age 25+)
- 50.0%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 14,299 | 19.5% |
| 18 to 64 | 47,077 | 64.3% |
| 65 and over | 11,834 | 16.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 10,250 | 14.0% |
| White, not Hispanic | 49,713 | 67.9% |
| Black, not Hispanic | 7,195 | 9.8% |
| Asian, not Hispanic | 2,728 | 3.7% |
| American Indian / Alaska Native, not Hispanic | 55 | 0.1% |
| Native Hawaiian / Pacific Islander, not Hispanic | 45 | 0.1% |
| Some other race, not Hispanic | 81 | 0.1% |
| Two or more races, not Hispanic | 3,143 | 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
- 68,752
- Citizen Voting Age Population (CVAP)
- 54,919
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 60,504 | 88.0% |
| Hispanic | 8,250 | 12.0% |
| White | 49,628 | 72.2% |
| Black | 6,535 | 9.5% |
| Asian | 1,966 | 2.9% |
| American Indian / Alaska Native | 55 | 0.1% |
| Native Hawaiian / Pacific Islander | 41 | 0.1% |
| Two or More Races | 257 | 0.4% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 50,073 | 91.2% |
| Hispanic | 4,850 | 8.8% |
| White | 42,168 | 76.8% |
| Black | 5,248 | 9.6% |
| Asian | 2,205 | 4.0% |
| American Indian / Alaska Native | 375 | 0.7% |
| Native Hawaiian / Pacific Islander | 27 | 0.0% |
| Two or More Races | 44 | 0.1% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
