State House District 18 State House District (IL) — Elections 1876–2024

Illinois 18th State House District, Illinois: Democratic loyalist district. In 2024, voted D+42%. Democratic peak: D+53 in 2008.

Key facts

2024 presidential margin: D+42MIT Election Lab
Political archetype: Democratic loyalistAkashic typology
Population: 80,2852024 5-year
Median household income: $83,4982024 5-year
White (non-Hispanic): 43.6%2024 5-year
Black: 22.2%2024 5-year
Hispanic / Latino: 26.8%2024 5-year
Peak Democratic margin: D+53 in 2008MIT Election Lab
Peak Republican margin: R+49 in 1920MIT Election Lab

2024 results by constituent county

1 counties · 1 D · 0 R

R+60

D+60

One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+41.6%	22,431	9,046	32,213
2020	D	+50.2%	26,740	8,649	36,027
2016	D	+53.1%	24,974	7,023	33,780
2012	D	+49.3%	23,062	7,677	31,215
2008	D	+53.4%	25,238	7,556	33,115
2004	D	+41.1%	22,305	9,255	31,752
2000	D	+40.0%	19,839	8,282	28,908
1996	D	+40.1%	17,868	7,151	26,751
1992	D	+30.0%	19,359	9,378	33,258
1988	D	+12.4%	17,506	13,612	31,391
1984	D	+2.6%	17,238	16,354	33,786
1980	D	+12.4%	17,423	13,271	33,513
1976	D	+8.7%	18,294	15,299	34,235
1972	R	−7.4%	16,473	19,123	35,805
1968	D	+9.5%	18,302	14,881	36,200
1964	D	+26.4%	23,815	13,877	37,693
1960	D	+13.0%	21,354	16,416	37,884
1956	R	−13.9%	15,149	20,036	35,275
1952	R	−0.7%	18,165	18,421	36,686
1948	D	+8.9%	18,849	15,738	34,795
1944	D	+15.9%	19,759	14,326	34,180
1940	D	+10.9%	18,098	14,539	32,764
1936	D	+27.5%	19,415	10,864	31,132
1932	D	+13.8%	14,241	10,692	25,784
1928	R	−6.2%	11,097	12,581	23,862
1924	R	−41.6%	3,504	10,674	17,254
1920	R	−49.0%	3,060	9,841	13,837
1916	R	−6.6%	5,879	6,750	13,168
1912	O	+13.0%	2,025	1,160	6,651
1908	R	−18.7%	2,370	3,570	6,431
1904	R	−32.1%	1,608	3,561	6,088
1900	R	−4.4%	2,885	3,157	6,215
1896	R	−18.4%	2,357	3,437	5,881
1892	D	+12.7%	2,240	1,724	4,049
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

German

9.0%

Irish

8.4%

Polish

7.0%

Italian

4.8%

English

3.6%

American

2.2%

French

0.9%

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: 38.0 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.3%

1.9%

75–84

2.7%

4.3%

65–74

5.1%

5.9%

55–64

6.2%

6.1%

45–54

6.2%

7.0%

35–44

7.0%

7.9%

25–34

8.0%

4.3%

18–24

4.4%

8.0%

5–17

7.7%

2.8%

2.7%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$83,498

State House District 18 ranks near the middle of US counties.

State House District 18$83,498

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 1817.9%

Working age (18–64)12.2%

Seniors (65+)14.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

64.2%

speak English only

Spanish21.1%

Other Indo-European8.3%

Asian & Pacific Islander4.3%

Other languages2.1%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

29.6%

Non-Christian

7.7%

Other Christian

6.4%

Baptist

4.8%

Mainline Protestant

2.9%

Pentecostal & Holiness

1.8%

Methodist

1.0%

Source · 2020 US Religion Census. Remaining 45.8% of residents not counted as adherents by any reporting body.

With a 2024 presidential margin exceeding 68 points Democratic, this district ranks among the most lopsided in the state, reflecting a densely urban constituency where competitive general elections are essentially nonexistent.

The Democratic margin in Illinois 18th State House District reached its widest at fifty-three points in 2008. The margin in 2024 was forty-two points — still decisive.

Its loyalty is rooted in its place. Median household income of $83,498, a 44% non-Hispanic-white share, and a population of 80,285 together describe a district whose political habits are deeply settled.

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Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

State House District 18, Illinois. Akashic. https://akashic.app/sld-lower/17018/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State House District 18, Illinois vote in 2024?

In 2024, State House District 18, Illinois voted Democratic by 41.6 points (D+42), carried by the Democratic candidate. Out of 32,213 votes cast, 22,431 went Democratic and 9,046 went Republican.

What is State House District 18, Illinois's political archetype?

Akashic classifies State House District 18, Illinois as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 22 times, Republican 11 times, and other 1 times.

When did State House District 18, Illinois last vote Republican?

The most recent presidential election in which State House District 18, Illinois voted Republican was 1972.

How many people live in State House District 18, Illinois?

State House District 18, Illinois has a population of 80,285 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in State House District 18, Illinois?

Median household income in State House District 18, Illinois is $83,498 — above the national median of $80,734. The Illinois state median is $83,390.

What is the political history of State House District 18, Illinois?

Akashic tracks 38 presidential elections in State House District 18, Illinois from 1876 to 2024. Of those, 22 went Democratic and 11 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

Illinois 18th State House District has voted Democratic in thirteen straight presidential cycles.

Key facts

Demographics

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Frequently asked questions