Illinois 8th Congressional District, Illinois: Urban anchor district. In 2024, voted D+31%. Republican peak: R+51 in 1920.
Key facts
- 2024 presidential margin
- D+31MIT Election Lab
- Political archetype
- Urban anchorAkashic typology
- Population
- 836,9712024 5-year
- Median household income
- $91,5732024 5-year
- White (non-Hispanic)
- 49.6%2024 5-year
- Black
- 16.5%2024 5-year
- Hispanic / Latino
- 26.0%2024 5-year
- Peak Democratic margin
- D+40 in 2016MIT Election Lab
- Peak Republican margin
- R+51 in 1920MIT Election Lab
D
KRISHNAMOORTHI, S. Raja
−1 liberal+1 conservative
Predecessors: DUCKWORTH, Tammy (2015–2017), DUCKWORTH, Tammy (2013–2015), WALSH, Joe (2011–2013), BEAN, Melissa L. (2009–2011)
Source · Voteview / Lewis, Poole, Rosenthal et al. (CC-BY).
Constituent county margins for Congressional District 8, 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.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 226,156 | 118,324 | 352,939 | ||
| D | 263,419 | 115,288 | 386,428 | ||
| D | 236,102 | 96,113 | 353,593 | ||
| D | 214,820 | 106,557 | 326,503 | ||
| D | 238,757 | 102,812 | 345,346 | ||
| D | 202,272 | 122,202 | 326,703 | ||
| D | 177,292 | 108,747 | 294,299 | ||
| D | 156,862 | 89,370 | 266,179 | ||
| D | 164,028 | 107,320 | 322,100 | ||
| D | 145,869 | 145,674 | 293,925 | ||
| R | 139,295 | 167,838 | 308,903 | ||
| D | 139,463 | 137,222 | 304,249 | ||
| R | 147,321 | 148,961 | 302,419 | ||
| R | 130,615 | 176,519 | 308,719 | ||
| D | 141,780 | 136,949 | 303,640 | ||
| D | 186,553 | 123,924 | 310,476 | ||
| D | 163,580 | 144,260 | 308,679 | ||
| R | 114,413 | 168,187 | 283,273 | ||
| R | 136,136 | 152,390 | 289,286 | ||
| D | 139,073 | 126,806 | 267,611 | ||
| D | 146,466 | 116,220 | 263,426 | ||
| D | 135,538 | 118,376 | 254,934 | ||
| D | 145,784 | 88,687 | 241,186 | ||
| D | 108,374 | 86,944 | 201,747 | ||
| R | 83,050 | 101,814 | 186,238 | ||
| R | 25,588 | 85,392 | 134,789 | ||
| R | 22,738 | 77,349 | 107,021 | ||
| R | 44,218 | 54,657 | 103,137 | ||
| O | 15,578 | 8,873 | 52,467 | ||
| R | 17,921 | 28,874 | 50,590 | ||
| R | 12,131 | 28,692 | 47,629 | ||
| R | 21,741 | 25,690 | 48,808 | ||
| R | 17,909 | 27,702 | 46,354 | ||
| D | 17,424 | 14,449 | 32,785 | ||
| — | — | — | — | ||
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Congressional elections · 16 Senate races
U.S. Senate
| Year | Won | D % | R % | Total |
|---|---|---|---|---|
| 2022 | O | 0.0% | 41.5% | 4,098,896 |
| 2020 | D | 54.9% | 38.9% | 5,968,901 |
| 2016 | D | 54.9% | 39.8% | 5,491,878 |
| 2014 | D | 53.5% | 42.7% | 3,603,519 |
| 2010 | R | 46.4% | 48.0% | 3,704,473 |
| 2008 | D | 67.8% | 28.5% | 5,329,884 |
| 2004 | D | 70.0% | 27.0% | 5,141,520 |
| 2002 | D | 60.3% | 38.0% | 3,486,851 |
| 1998 | R | 47.4% | 50.3% | 3,394,521 |
| 1996 | D | 56.1% | 40.7% | 4,250,722 |
| 1992 | D | 53.3% | 43.1% | 4,939,558 |
| 1990 | D | 65.1% | 34.9% | 3,251,005 |
| 1986 | D | 65.1% | 33.7% | 3,122,883 |
| 1984 | D | 50.1% | 48.2% | 4,787,335 |
| 1980 | D | 56.0% | 42.5% | 4,580,029 |
| 1978 | R | 45.5% | 53.3% | 3,184,764 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
11.7%
Irish
9.6%
Polish
7.5%
Italian
6.1%
English
4.5%
American
2.3%
French
1.1%
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: 38.5 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
$91,573
Congressional District 8 ranks near the middle of US counties.
Congressional District 8$91,573
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
11.4%
Child poverty is below the national average.
Children under 1814.9%
Working age (18–64)10.3%
Seniors (65+)12.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
65.9%
speak English only
Spanish20.2%
Other Indo-European8.1%
Asian & Pacific Islander4.1%
Other languages1.7%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 43.8% of residents not counted as adherents by any reporting body.
Illinois's 8th stretches through the northwest Chicago suburbs, a corridor that has trended steadily toward Democratic candidates over the past decade as college-educated and Latino voters reshaped its electorate. The 2024 presidential margin landed at D+10.
The Democratic margin in Illinois 8th Congressional District has been steady. It reached its modern peak at forty points in 2016; the 2024 margin was thirty-one points, still in line with the district's long pattern.
Its political identity is inseparable from its demographic profile: a 50% non-Hispanic-white share, a median household income of $91,573, and the full diversity of a major metropolitan center.
Compare two places, side by side
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Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Congressional District 8, Illinois. Akashic. https://akashic.app/cd/1708/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Congressional District 8, Illinois vote in 2024?
In 2024, Congressional District 8, Illinois voted Democratic by 30.6 points (D+31), carried by the Democratic candidate. Out of 352,939 votes cast, 226,156 went Democratic and 118,324 went Republican.
What is Congressional District 8, Illinois's political archetype?
Akashic classifies Congressional District 8, Illinois as a "Urban anchor" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 20 times, Republican 13 times, and other 1 times.
When did Congressional District 8, Illinois last vote Republican?
The most recent presidential election in which Congressional District 8, Illinois voted Republican was 1984.
How many people live in Congressional District 8, Illinois?
Congressional District 8, Illinois has a population of 836,971 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Congressional District 8, Illinois?
Median household income in Congressional District 8, Illinois is $91,573 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Congressional District 8, Illinois?
Akashic tracks 38 presidential elections in Congressional District 8, Illinois from 1876 to 2024. Of those, 20 went Democratic and 13 went Republican. The district's archetype — "Urban anchor" — captures the overall trajectory of that voting record.