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Illinois State House District 20

Illinois State House District 20

Illinois · Latest: 2024↓ R+32.8 vs 2020

Leans Republican — shifted 32.8pp toward Republicans in 2024 — 109K residents

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Illinois State House District 20 is a state house district that has a population of 108,620. In the 2024 presidential election, it voted Republican with a margin of R+9.1. Akashic Edge tracks 5 presidential elections here, dating back to 2008.

Illinois State House District 20 Presidential Election Results, 2008–2024
YearDem %Rep %MarginSwing
202444.9%54.0%R+9.1R+32.8
2020*61.1%37.3%D+23.7D+17.3
2016*50.4%43.9%D+6.4R+4.8
2012*55.6%44.4%D+11.3R+2.5
2008*56.1%42.3%D+13.7—

* Pre-2022 results projected onto current district boundaries. Actual boundaries at the time of the election may have differed.

Political Identity

What defines IL-HD-20?

IL-HD-20 flipped to Republicans in 2024 after voting the other way in 2020. It has a working-class electorate (0% college-educated) — a demographic increasingly aligned with Republicans nationwide.

Similarity Explorer

Similar state house 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 IL-HD-20's political evolution with the Historian
Automated Readout

Key Insights

High-confidence patterns distilled from this geography's election history.
  • Swung 32.8 points toward Republican between 2020 and 2024
  • Won by both parties in recent history — Democrats most recently in 2020, Republicans in 2024
  • Highly elastic — margins have ranged 32.8 points across recent elections, suggesting a volatile electorate
Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.
IL-HD-20Census 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) 70.0%Hispanic 21.4%Asian 5.1%Multiracial 1.3%Black 1.3%Native American 0.8%
GroupIL-HD-20StateNational
White (Non-Hispanic)
70.0%58.1%57.4%
Hispanic / Latino
21.4%18.8%19.3%
Asian
5.1%6.0%6.0%
Multiracial / Other
1.3%2.9%4.0%
Black / African American
1.3%13.6%12.2%
Native American / Alaska Native
0.8%0.6%0.9%
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 Illinois State House District 20? 108,620 residents as of the 2020 Census.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.
IL-HD-20 vs Illinois vs National109K residents
Population & electorate

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

Total population
Local vs state vs U.S.
109K
local
109KState 12.7MNational 334.9M
Share of U.S. population
Local vs state vs U.S.
0.03%
local
0.03%National 100%
Voting-age population
Local vs state vs U.S.
80.2%
local
80.2%State 75.9%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 $84,845National $83,960
Poverty rate
Local vs state vs U.S.
N/A
local
N/AState 11.8%National 12.5%
College degree
Local vs state vs U.S.
N/A
local
N/AState 37.9%National 35.6%
Homeownership
Local vs state vs U.S.
N/A
local
N/AState 67.1%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 39.1 yrsNational 39.1 yrs
Age 18–29
Local vs state vs U.S.
N/A
local
N/AState 15.8%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 14.7%National 14.1%
Non-English at home
Local vs state vs U.S.
N/A
local
N/AState 24.0%National 22.2%
English only
Local vs state vs U.S.
N/A
local
N/AState 76.0%National 77.8%
Voter Turnout

Turnout in IL-HD-20

Estimated using 2020 Census voting-age population.
2024 Turnout
54.8%
vs Previous
-58.6pp
Voting-Age Pop
87,062
History
2008–2024
Competitiveness

How competitive is IL-HD-20?

Lean DAvg margin: D+7.0 (last 3 elections)
2008
D+13.7
2012
D+11.3
2016
D+6.4
2020
D+23.7
2024
R+9.1
Elasticity
32.8pp
margin range
Party Flips
1
last 30 years
5-Elec Avg
D+9.2

Other Illinois State House Districts

117 total
NameMargin ↓
IL-HD-25D+77.3
IL-HD-13D+77.3
IL-HD-14D+76.7
IL-HD-05D+73.6
IL-HD-11D+72.0
IL-HD-10D+69.4
IL-HD-26D+68.3
IL-HD-18D+68.1
IL-HD-78D+67.1
IL-HD-33D+65.8
IL-HD-40D+64.3
IL-HD-09D+64.2
IL-HD-04D+63.3
IL-HD-06D+61.7
IL-HD-12D+61.6
IL-HD-39D+61.1
IL-HD-103D+56.4
IL-HD-34D+55.0
IL-HD-30D+55.0
IL-HD-08D+53.6
IL-HD-07D+53.5
IL-HD-03D+51.5
IL-HD-32D+51.1
IL-HD-31D+42.2
IL-HD-58D+40.4
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