Kansas State Senate District 9

State Legislative District Profile (Upper Chamber)

Overview

District ID
ks-sd-009
State
Kansas
Chamber
Upper chamber (state senate)
District Code
009
Land Area
435.8 sq mi
Water Area
7.73 sq mi

Boundary

Boundary of Kansas State Senate District 9

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Leavenworth County199.04 sq mi45.7%43.0%
Douglas County130.40 sq mi29.9%28.6%
Johnson County79.88 sq mi18.3%16.9%
Wyandotte County26.51 sq mi6.1%17.5%

Showing all 4 counties

Places

PlaceOverlapShare of district landShare of place land
Olathe city17.53 sq mi4.0%27.2%
Bonner Springs city15.13 sq mi3.5%96.8%
De Soto city11.26 sq mi2.6%72.5%
Edwardsville city9.04 sq mi2.1%100.0%
Tonganoxie city4.06 sq mi0.9%99.8%
Eudora city2.94 sq mi0.7%90.2%
Baldwin City city2.68 sq mi0.6%90.5%
Linwood city0.58 sq mi0.1%98.8%
Basehor city0.17 sq mi<0.1%2.4%
Lenexa city0.00 sq mi<0.1%<0.1%

Showing all 10 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 341,79156.3%5.7%24.4%
KS District 232,49943.7%4.4%75.6%

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

Voters

Registered Voters
55,362
Active Voters
52,347 (94.6%)

Party Registration

PartyVotersShare
Democratic14,12625.5%
Republican25,09245.3%
Unaffiliated15,20727.5%
Other parties9371.7%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202440,714 (73.5%)0 (0.0%)0 (0.0%)
2021–202230,767 (55.6%)0 (0.0%)0 (0.0%)
2019–202038,080 (68.8%)0 (0.0%)0 (0.0%)
2017–201828,171 (50.9%)0 (0.0%)0 (0.0%)
2015–201630,277 (54.7%)0 (0.0%)0 (0.0%)
2013–201419,355 (35.0%)0 (0.0%)0 (0.0%)
2011–201223,404 (42.3%)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
78,556 (± 2,507)
Median Age
39.0
Median Household Income
$101,571 (± $5,918)
High School Graduate or Higher (age 25+)
94.4%
Bachelor's Degree or Higher (age 25+)
43.6%

Population by Age

GroupPeopleShare
Under 1819,92125.4%
18 to 6446,45159.1%
65 and over12,18415.5%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)7,4289.5%
White, not Hispanic63,25280.5%
Black, not Hispanic2,0842.7%
Asian, not Hispanic1,7242.2%
American Indian / Alaska Native, not Hispanic1430.2%
Native Hawaiian / Pacific Islander, not Hispanic230.0%
Some other race, not Hispanic2530.3%
Two or more races, not Hispanic3,6494.6%

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
75,899
Citizen Voting Age Population (CVAP)
56,373

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic70,08492.3%
Hispanic5,8157.7%
White64,52085.0%
Black2,0342.7%
Asian9791.3%
American Indian / Alaska Native1440.2%
Native Hawaiian / Pacific Islander130.0%
Two or More Races900.1%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic52,90193.8%
Hispanic3,4716.2%
White49,32487.5%
Black1,7403.1%
Asian1,0021.8%
American Indian / Alaska Native8061.4%
Native Hawaiian / Pacific Islander140.0%
Two or More Races470.1%

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