State House District 105 State House District (IL) — Elections 1876–2024

Illinois 105th State House District, Illinois: Republican loyalist district. In 2024, voted R+26%. Republican peak: R+46 in 1920.

Key facts

2024 presidential margin: R+26MIT Election Lab
Political archetype: Republican loyalistAkashic typology
Population: 99,0162024 5-year
Median household income: $79,5752024 5-year
White (non-Hispanic): 87.7%2024 5-year
Black: 3.4%2024 5-year
Hispanic / Latino: 5.3%2024 5-year
Peak Democratic margin: D+16 in 1912MIT Election Lab
Peak Republican margin: R+46 in 1920MIT Election Lab

2024 results by constituent county

9 counties · 2 D · 7 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	R	−25.6%	18,577	31,642	51,094
2020	R	−24.0%	19,205	31,760	52,309
2016	R	−24.9%	16,271	28,329	48,410
2012	R	−19.2%	18,165	27,032	46,217
2008	R	−6.9%	22,017	25,358	48,171
2004	R	−19.2%	19,082	28,217	47,601
2000	R	−14.6%	17,795	24,093	43,049
1996	R	−4.8%	16,821	18,702	39,396
1992	R	−1.5%	17,756	18,442	44,350
1988	R	−18.9%	15,971	23,472	39,658
1984	R	−29.7%	14,695	27,187	42,101
1980	R	−36.0%	11,921	27,129	42,280
1976	R	−20.7%	15,527	23,799	39,919
1972	R	−35.2%	12,976	27,097	40,147
1968	R	−22.0%	13,778	22,207	38,399
1964	D	+4.6%	20,078	18,300	38,378
1960	R	−19.6%	16,008	23,825	39,860
1956	R	−36.6%	12,110	26,091	38,245
1952	R	−32.3%	13,019	25,443	38,508
1948	R	−20.0%	12,748	19,169	32,092
1944	R	−21.5%	13,437	20,887	34,669
1940	R	−12.4%	17,263	22,188	39,645
1936	D	+5.8%	19,431	17,277	37,380
1932	D	+14.3%	19,388	14,474	34,309
1928	R	−21.3%	12,214	18,882	31,307
1924	R	−38.0%	5,923	16,437	27,672
1920	R	−46.1%	6,069	17,637	25,081
1916	R	−14.7%	11,656	15,849	28,510
1912	D	+15.7%	6,282	3,738	16,173
1908	R	−12.5%	6,667	8,707	16,312
1904	R	−24.7%	5,391	9,324	15,909
1900	R	−10.5%	7,492	9,318	17,373
1896	R	−11.0%	7,346	9,204	16,904
1892	D	+5.5%	7,516	6,685	15,004
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

30.5%

Irish

13.6%

English

11.8%

Italian

5.2%

American

5.0%

Polish

3.7%

French

1.7%

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: 40.6 in this county, 39.1 nationally

Male

Age

Female

0.9%

85+

1.6%

2.5%

75–84

3.0%

5.7%

65–74

5.8%

6.7%

55–64

6.8%

5.9%

45–54

5.7%

6.3%

35–44

6.1%

5.9%

25–34

5.6%

4.9%

18–24

4.7%

8.5%

5–17

8.1%

2.8%

2.6%

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

Median household income

2024 inflation-adjusted dollars

$79,575

State House District 105 ranks near the middle of US counties.

State House District 105$79,575

Illinois$83,390

United States$80,734

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

Poverty rate

All persons below federal poverty line

10.5%

Child poverty is below the national average.

Children under 1811.7%

Working age (18–64)10.4%

Seniors (65+)8.1%

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

Language at home

Population aged 5 and older

94.8%

speak English only

Spanish2.8%

Other Indo-European1.3%

Asian & Pacific Islander0.9%

Other languages0.2%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

10.0%

Other Christian

8.7%

Mainline Protestant

8.5%

Methodist

4.9%

Pentecostal & Holiness

4.2%

Baptist

2.2%

Non-Christian

1.0%

Source · 2020 US Religion Census. Remaining 60.5% of residents not counted as adherents by any reporting body.

District 105 spans rural central Illinois and delivered a 46-point Republican presidential margin in 2024, making it among the most reliably conservative state house seats in a state whose statewide offices lean Democratic.

The Republican margin in Illinois 105th State House District reached its widest at forty-six points in 1920. The margin in 2024 was twenty-six points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $79,575, a 88% non-Hispanic-white share, and a population of 99,016 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 105, Illinois. Akashic. https://akashic.app/sld-lower/17105/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State House District 105, Illinois vote in 2024?

In 2024, State House District 105, Illinois voted Republican by 25.6 points (R+26), carried by the Republican candidate. Out of 51,094 votes cast, 18,577 went Democratic and 31,642 went Republican.

What is State House District 105, Illinois's political archetype?

Akashic classifies State House District 105, Illinois as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 5 times, Republican 29 times, and other 0 times.

When did State House District 105, Illinois last vote Democratic?

The most recent presidential election in which State House District 105, Illinois voted Democratic was 1964.

How many people live in State House District 105, Illinois?

State House District 105, Illinois has a population of 99,016 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 105, Illinois?

Median household income in State House District 105, Illinois is $79,575 — below the national median of $80,734. The Illinois state median is $83,390.

What is the political history of State House District 105, Illinois?

Akashic tracks 38 presidential elections in State House District 105, Illinois from 1876 to 2024. Of those, 5 went Democratic and 29 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.

Illinois 105th State House District has voted Republican in fifteen straight presidential cycles.

Key facts

Demographics

Compare two places, side by side

Frequently asked questions