Illinois 48th State Senate District, Illinois: Tossup district. In 2024, voted R+9%. Republican peak: R+12 in 2016.
Key facts
- 2024 presidential margin
- R+9MIT Election Lab
- Political archetype
- TossupAkashic typology
- Population
- 217,1562024 5-year
- Median household income
- $71,6762024 5-year
- White (non-Hispanic)
- 77.5%2024 5-year
- Black
- 13.3%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+3 in 2008MIT Election Lab
- Peak Republican margin
- R+12 in 2016MIT Election Lab
Constituent county margins for State Senate District 48, ILOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
5 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 47,213 | 57,225 | 106,586 | ||
| R | 50,541 | 60,387 | 113,769 | ||
| R | 43,305 | 56,435 | 107,452 | ||
| R | 47,005 | 55,476 | 104,624 | ||
| D | 56,051 | 52,489 | 110,611 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
20.1%
English
12.5%
Irish
11.8%
American
5.4%
Italian
3.8%
Polish
1.9%
Scottish
1.9%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 41.0 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$71,676
State Senate District 48 ranks near the middle of US counties.
State Senate District 48$71,676
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
13.5%
Children face moderate poverty.
Children under 1818.2%
Working age (18–64)12.7%
Seniors (65+)8.0%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
95.5%
speak English only
Spanish1.7%
Other Indo-European1.3%
Asian & Pacific Islander1.1%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 53.5% of residents not counted as adherents by any reporting body.
Illinois Senate District 48 sits in the outer Chicago suburbs, where population growth and demographic change have made it a consistent bellwether for statewide suburban trends. Its R+4.6 presidential margin reflects ongoing realignment in collar-county communities.
The district's recent history is a story of close margins. The Democratic margin reached three points in 2008; the Republican margin reached twelve points in 2016. Most other elections have been decided by single-digit points.
Its demographics — a population of 217,156, a 78% non-Hispanic-white share, a median household income of $71,676 — situate the district close to national averages on several dimensions.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 48, Illinois — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/sld-upper/17048/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 48, Illinois vote in 2024?
In 2024, State Senate District 48, Illinois voted Republican by 9.4 points (R+9), carried by the Republican candidate. Out of 106,586 votes cast, 47,213 went Democratic and 57,225 went Republican.
What is State Senate District 48, Illinois's political archetype?
Akashic classifies State Senate District 48, Illinois as a "Tossup" district based on its long-arc presidential voting pattern. Across 5 elections in the dataset, the district has voted Democratic 1 times, Republican 4 times, and other 0 times.
When did State Senate District 48, Illinois last vote Democratic?
The most recent presidential election in which State Senate District 48, Illinois voted Democratic was 2008.
How many people live in State Senate District 48, Illinois?
State Senate District 48, Illinois has a population of 217,156 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 48, Illinois?
Median household income in State Senate District 48, Illinois is $71,676 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of State Senate District 48, Illinois?
Akashic tracks 5 presidential elections in State Senate District 48, Illinois from 2008 to 2024. Of those, 1 went Democratic and 4 went Republican. The district's archetype — "Tossup" — captures the overall trajectory of that voting record.