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Kansas State Senate District 21

Kansas State Senate District 21

Kansas · Latest: 2024→ Even vs 2020

Safe Democratic — 75K residents

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Presidential margin · 2008 → 2024

Full history

  • 2008

    D+2.0

    Obama

  • 2012

    R+3.8

    Romney

  • 2016

    D+8.0

    Clinton

  • 2020

    D+20.5

    Biden

  • 2024

    D+20.1

    Harris

5 cycles · 2008 → 2024 · ↓ R+0.4 vs 2020

Who lives here

Full breakdown
  • White70.4%
  • Hispanic12.3%
  • Black8.3%
Similarity Explorer

Similar state senate districts

Nearest neighbors matched on the same place-page feature set used across the dossier system.
8 visible matches
Historian Query

Ask the Historian

Explore KS-SD-21's political evolution with the Historian
Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.
KS-SD-21Census ACS 2024
Census race profile
Major Census race and ethnicity groups shown as a share of total population.
Expand rows for ancestry detail
White (Non-Hispanic) 70.4%Hispanic 12.3%Black 8.3%Multiracial 5.0%Asian 3.5%Native American 0.5%
GroupKS-SD-21StateNational
White (Non-Hispanic)
70.4%72.7%57.4%
Hispanic / Latino
12.3%13.6%19.3%
Black / African American
8.3%5.3%12.2%
Multiracial / Other
5.0%4.5%4.0%
Asian
3.5%2.9%6.0%
Native American / Alaska Native
0.5%0.8%0.9%
Native Hawaiian / Pacific Islander
0.1%0.1%0.2%
Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Detailed ancestry data unavailable for this geography.

Who lives in Kansas State Senate District 21? 74,509 residents as of the 2020 Census.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.
KS-SD-21 vs Kansas vs National75K residents
Population & electorate

Scale, voting-age share, and this geography's footprint inside the national electorate.

Total population
Local vs state vs U.S.
75K
local
75KState 2.9MNational 334.9M
Share of U.S. population
Local vs state vs U.S.
0.02%
local
0.02%National 100%
Voting-age population
Local vs state vs U.S.
79.3%
local
79.3%State 73.3%National 75.7%
Economic profile

Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.

Median household income
Local vs state vs U.S.
N/A
local
N/AState $76,675National $83,960
Poverty rate
Local vs state vs U.S.
N/A
local
N/AState 11.3%National 12.5%
College degree
Local vs state vs U.S.
N/A
local
N/AState 35.6%National 35.6%
Homeownership
Local vs state vs U.S.
N/A
local
N/AState 67.2%National 65.2%
Community profile

Age structure, language use, and nativity signals that explain how this geography differs from state and nation.

Median age
Local vs state vs U.S.
N/A
local
N/AState 37.5 yrsNational 39.1 yrs
Age 18–29
Local vs state vs U.S.
N/A
local
N/AState 16.6%National 15.7%
Age 65+
Local vs state vs U.S.
N/A
local
N/AState 17.0%National 17.0%
Foreign born
Local vs state vs U.S.
N/A
local
N/AState 7.4%National 14.1%
Non-English at home
Local vs state vs U.S.
N/A
local
N/AState 12.1%National 22.2%
English only
Local vs state vs U.S.
N/A
local
N/AState 87.9%National 77.8%
Voter Turnout

Turnout in KS-SD-21

Turnout % = votes cast ÷ citizen voting-age population (CVAP). Source: CVAP Special Tab 2020-2024.
2024 Turnout
68.5%
vs Previous
-4.1pp
Eligible Non-Voters
17K · 31.5%
Citizen VAP
54,919
History
2008–2024
Competitiveness

How competitive is KS-SD-21?

Safe DAvg margin: D+16.2 (last 3 elections)
2008
D+2.0
2012
R+3.8
2016
D+8.0
2020
D+20.5
2024
D+20.1
Elasticity
24.4pp
margin range
Party Flips
2
last 30 years
5-Elec Avg
D+9.4
Contained geographies

Counties in KS-SD-21

Counties that overlap KS-SD-21.

Counties

(1)
Johnson100%

Other Kansas State Senate Districts

39 total
NameMargin ↓
KS-SD-02D+57.3
KS-SD-04D+45.2
KS-SD-29D+37.0
KS-SD-07D+32.2
KS-SD-19D+27.1
KS-SD-06D+22.4
KS-SD-08D+20.7
KS-SD-25D+12.8
KS-SD-10D+2.8
KS-SD-11D+2.6
KS-SD-22D+1.8
KS-SD-35R+1.6
KS-SD-23R+2.7
KS-SD-20R+4.5
KS-SD-05R+8.6
KS-SD-03R+13.3
KS-SD-30R+14.5
KS-SD-09R+14.8
KS-SD-28R+17.2
KS-SD-37R+17.5
KS-SD-17R+19.3
KS-SD-27R+20.9
KS-SD-16R+21.5
KS-SD-31R+26.1
KS-SD-18R+33.1
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