Illinois State Senate District 55
Illinois · Latest: 2024
Safe Republican — 217K residents
Presidential margin · 2008 → 2024
R+10.8
R+28.8
R+46.3
R+46.8
R+47.1
Who lives here
- White89.9%
- Multiracial3.7%
- Black2.7%
Similar state senate districts
Nearest neighbors matched on the same place-page feature set used across the dossier system.
Illinois State Senate District 54
Suburban Republican 3
Missouri State Senate District 28
Suburban Republican
Ohio State Senate District 1
Suburban Republican 3
Indiana State Senate District 42
Suburban Republican
Missouri State Senate District 20
Suburban Republican 3
Missouri State Senate District 6
Suburban Republican
Indiana State Senate District 13
Suburban Republican
Tennessee State Senate District 15
Suburban Republican
Ask the Historian
Explore IL-SD-55's political evolution with the Historian
Who Lives Here
A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.
Census race profile
Major Census race and ethnicity groups shown as a share of total population.
| Group | IL-SD-55 | State | National |
|---|---|---|---|
White (Non-Hispanic) | 89.9% | 58.1% | 57.4% |
Multiracial / Other | 3.7% | 2.9% | 4.0% |
Black / African American | 2.7% | 13.6% | 12.2% |
Hispanic / Latino | 2.6% | 18.8% | 19.3% |
Asian | 0.7% | 6.0% | 6.0% |
Native American / Alaska Native | 0.3% | 0.6% | 0.9% |
Method notes
Who lives in Illinois State Senate District 55? 217,112 residents as of the 2020 Census.
Demographics
Read this geography's profile in three layers: local, state (where available), and national baseline.
Population & electorate
Scale, voting-age share, and this geography's footprint inside the national electorate.
Total population
217K
Share of U.S. population
0.06%
Voting-age population
77.8%
Economic profile
Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.
Median household income
N/A
Poverty rate
N/A
College degree
N/A
Homeownership
N/A
Community profile
Age structure, language use, and nativity signals that explain how this geography differs from state and nation.
Median age
N/A
Age 18–29
N/A
Age 65+
N/A
Foreign born
N/A
Non-English at home
N/A
English only
N/A
Turnout in IL-SD-55
Turnout % = votes cast ÷ citizen voting-age population (CVAP). Source: CVAP Special Tab 2020-2024.
67.8%
-0.4pp
54K · 32.2%
166,734
2008–2024
How competitive is IL-SD-55?
Safe RAvg margin: R+46.7 (last 3 elections)
2008
R+10.8
2012
R+28.8
2016
R+46.3
2020
R+46.8
2024
R+47.1
36.4pp
0
R+36.0
Counties in IL-SD-55
Counties that overlap IL-SD-55.
Other Illinois State Senate Districts
58 total| Name | Margin ↓ |
|---|---|
| IL-SD-07 | D+77.1 |
| IL-SD-13 | D+72.6 |
| IL-SD-03 | D+68.5 |
| IL-SD-05 | D+67.0 |
| IL-SD-06 | D+67.0 |
| IL-SD-20 | D+62.7 |
| IL-SD-17 | D+60.2 |
| IL-SD-02 | D+57.1 |
| IL-SD-04 | D+53.6 |
| IL-SD-09 | D+52.2 |
| IL-SD-15 | D+46.7 |
| IL-SD-16 | D+46.0 |
| IL-SD-39 | D+44.6 |
| IL-SD-14 | D+38.0 |
| IL-SD-12 | D+38.0 |
| IL-SD-29 | D+33.4 |
| IL-SD-30 | D+33.2 |
| IL-SD-01 | D+30.1 |
| IL-SD-52 | D+26.8 |
| IL-SD-21 | D+22.0 |
| IL-SD-42 | D+21.0 |
| IL-SD-11 | D+18.1 |
| IL-SD-31 | D+18.1 |
| IL-SD-22 | D+18.0 |
| IL-SD-08 | D+17.8 |
Unlock Legislative District Analytics
Advance from the public dossier into precinct-level, insight-rich district intelligence.
Precinct data, Smart Insights, full history, and export controls tailored to place pages.
Precinct-Level Data
See results for every neighborhood and voting precinct
Smart Insights
Automated highlights from recent election patterns
Full Historical Access
165 years of election data at every level of geography
CSV Exports
Download any table or chart as a CSV file