akashic
1876–2024
State House District 91·Illinois

Illinois 91st State House District has voted Republican in fifteen straight presidential cycles.

A reliably Republican anchor in downstate Illinois

1876 — 2024·38 elections
IL
Latest
R+19
in 2024
Archetype
Republican loyalist
since the recent cycles
Population
33,217
2024 ACS

Illinois 91st State House District, Illinois: Republican loyalist district. In 2024, voted R+19%. Republican peak: R+39 in 1920.

Key facts

2024 presidential margin
R+19MIT Election Lab
Political archetype
Republican loyalistAkashic typology
Population
33,2172024 5-year
Median household income
$80,8532024 5-year
White (non-Hispanic)
86.3%2024 5-year
Black
4.9%2024 5-year
Hispanic / Latino
4.0%2024 5-year
Peak Democratic margin
D+21 in 1912MIT Election Lab
Peak Republican margin
R+39 in 1920MIT Election Lab
2024 results by constituent county
4 counties · 2 D · 2 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).
YearWonMarginDemocraticRepublicanTotal
R
−18.7%
6,81510,03117,161
R
−18.0%
6,91810,06317,486
R
−20.8%
5,7609,13916,281
R
−19.7%
5,9668,97415,284
R
−7.8%
7,1598,39315,822
R
−20.0%
6,0749,13115,306
R
−16.2%
5,5897,82313,765
R
−6.9%
5,2686,12512,473
R
−2.4%
5,5525,88913,778
R
−18.3%
4,8817,08512,029
R
−27.4%
4,5668,03012,659
R
−35.8%
3,5548,09312,665
R
−19.9%
4,6366,98811,792
R
−37.0%
3,4967,62611,148
R
−16.4%
3,9795,70510,547
D
+11.4%
5,7684,58710,355
R
−18.0%
4,2566,13210,397
R
−30.4%
3,3836,3469,741
R
−24.5%
3,5635,8809,453
R
−10.4%
3,2904,0627,391
R
−10.2%
3,4274,2077,665
R
−1.8%
4,2794,4368,758
D
+18.3%
4,6693,2027,999
D
+18.5%
4,1492,8397,094
R
−22.1%
2,3673,7286,162
R
−33.3%
1,2173,0205,407
R
−39.0%
1,2983,1734,807
R
−6.3%
2,4052,7415,366
D
+21.3%
1,2346032,968
R
−7.3%
1,3151,5373,026
R
−19.0%
1,0501,6042,918
R
−4.8%
1,4751,6313,224
R
−7.7%
1,4001,6403,112
D
+7.1%
1,4181,2202,784
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Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
29.3%
Irish
13.0%
English
12.9%
American
5.1%
Italian
3.6%
Polish
2.7%
French
1.5%
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: 38.8 in this county, 39.1 nationally
Male
Age
Female
0.9%
85+
1.5%
2.2%
75–84
2.8%
5.1%
65–74
5.5%
6.2%
55–64
6.4%
5.9%
45–54
5.9%
6.4%
35–44
6.3%
6.0%
25–34
5.9%
5.3%
18–24
5.4%
8.6%
5–17
8.3%
2.8%
<5
2.6%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$80,853
State House District 91 ranks near the middle of US counties.
State House District 91$80,853
Illinois$83,390
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
10.3%
Child poverty is below the national average.
Children under 1810.5%
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
Spanish2.1%
Other Indo-European1.5%
Asian & Pacific Islander1.4%
Other languages0.3%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Other Christian
11.3%
Mainline Protestant
8.2%
Catholic & Orthodox
7.6%
Pentecostal & Holiness
4.9%
Methodist
4.9%
Baptist
3.0%
Non-Christian
1.7%
Source · 2020 US Religion Census. Remaining 58.5% of residents not counted as adherents by any reporting body.

With a 2024 presidential margin of R+20.8, this downstate district of roughly 108,000 residents sits among Illinois's most consistently conservative state house seats, reflecting the rural demographic patterns common to the region.

The Republican margin in Illinois 91st State House District reached its widest at thirty-nine points in 1920. The margin in 2024 was nineteen points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $80,853, a 86% non-Hispanic-white share, and a population of 33,217 together describe a district whose political habits are deeply settled.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State House District 91, Illinois. Akashic. https://akashic.app/sld-lower/17091/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did State House District 91, Illinois vote in 2024?
In 2024, State House District 91, Illinois voted Republican by 18.7 points (R+19), carried by the Republican candidate. Out of 17,161 votes cast, 6,815 went Democratic and 10,031 went Republican.
What is State House District 91, Illinois's political archetype?
Akashic classifies State House District 91, 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 91, Illinois last vote Democratic?
The most recent presidential election in which State House District 91, Illinois voted Democratic was 1964.
How many people live in State House District 91, Illinois?
State House District 91, Illinois has a population of 33,217 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 91, Illinois?
Median household income in State House District 91, Illinois is $80,853 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of State House District 91, Illinois?
Akashic tracks 38 presidential elections in State House District 91, 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.