Madison County, Illinois: Stable Rural Right county. In 2024, voted R+13%. Democratic peak: D+37 in 1964.
Key facts
- 2024 presidential margin
- R+13MIT Election Lab
- Political typology
- Stable Rural RightAkashic typology
- Population
- 264,2382024 5-year
- Median household income
- $75,7932024 5-year
- White (non-Hispanic)
- 83.0%2024 5-year
- Black
- 7.8%2024 5-year
- Hispanic / Latino
- 4.3%2024 5-year
- Peak Democratic margin
- D+37 in 1964MIT Election Lab
- Peak Republican margin
- R+27 in 1920MIT Election Lab
- Most similar
- Lake County, MI · similarity 0.95
2024 results by precinct
2024 precinct map of Madison CountyPrecinct-level 2024 presidential results for Madison County, with each precinct boundary colored by Democratic-vs-Republican margin.
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | +2.8% |
| 1896 | −7.8% |
| 1900 | −8.9% |
| 1904 | −22.7% |
| 1908 | −8.9% |
| 1912 | +9.5% |
| 1916 | −3.7% |
| 1920 | −27.3% |
| 1924 | −16.9% |
| 1928 | −8.3% |
| 1932 | +27.0% |
| 1936 | +30.6% |
| 1940 | +18.9% |
| 1944 | +17.0% |
| 1948 | +23.9% |
| 1952 | +16.7% |
| 1956 | +9.7% |
| 1960 | +12.1% |
| 1964 | +36.9% |
| 1968 | +6.7% |
| 1972 | −12.2% |
| 1976 | +12.0% |
| 1980 | −7.3% |
| 1984 | −8.2% |
| 1988 | +9.3% |
| 1992 | +23.1% |
| 1996 | +17.7% |
| 2000 | +9.2% |
| 2004 | +3.2% |
| 2008 | +9.2% |
| 2012 | −1.4% |
| 2016 | −15.3% |
| 2020 | −13.2% |
| 2024 | −13.2% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 56,341 | 73,925 | 133,072 | ||
| R | 57,836 | 76,031 | 137,558 | ||
| R | 50,587 | 70,490 | 130,179 | ||
| R | 58,922 | 60,608 | 122,885 | ||
| D | 68,979 | 57,177 | 128,334 | ||
| D | 63,399 | 59,384 | 123,678 | ||
| D | 59,077 | 48,821 | 111,104 | ||
| D | 53,568 | 35,758 | 100,573 | ||
| D | 58,484 | 32,167 | 114,095 | ||
| D | 54,175 | 44,907 | 99,695 | ||
| R | 48,352 | 57,021 | 105,713 | ||
| R | 43,860 | 51,160 | 100,124 | ||
| D | 56,457 | 44,183 | 101,998 | ||
| R | 43,289 | 55,385 | 99,116 | ||
| D | 46,384 | 39,622 | 101,129 | ||
| D | 65,115 | 30,009 | 95,124 | ||
| D | 54,787 | 42,984 | 97,904 | ||
| D | 47,897 | 39,413 | 87,398 | ||
| D | 50,734 | 36,206 | 87,039 | ||
| D | 40,897 | 25,059 | 66,306 | ||
| D | 40,114 | 28,399 | 68,872 | ||
| D | 44,803 | 30,445 | 75,929 | ||
| D | 42,172 | 22,073 | 65,686 | ||
| D | 35,211 | 19,774 | 57,238 | ||
| R | 23,658 | 28,028 | 52,406 | ||
| R | 12,863 | 19,926 | 41,851 | ||
| R | 10,149 | 19,249 | 33,292 | ||
| R | 16,302 | 17,594 | 35,274 | ||
| D | 7,155 | 5,462 | 17,868 | ||
| R | 7,812 | 9,463 | 18,503 | ||
| R | 5,429 | 9,009 | 15,771 | ||
| R | 6,753 | 8,106 | 15,190 | ||
| R | 6,344 | 7,431 | 13,952 | ||
| D | 5,680 | 5,355 | 11,669 | ||
| — | — | — | — | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
26.6%
Irish
13.3%
English
13.1%
American
4.9%
Italian
4.7%
Polish
2.4%
French
2.3%
African American
6.2%
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
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.
2024 ACS
Age distribution by sex
Median age: 40.2 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.
2024 ACS
Median household income
Inflation-adjusted dollars
$75,793
Madison County ranks in the top 25% of US counties.
Madison County$75,793
Illinois$83,390
United States$80,734
Madison County ranks in the top 25% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
11.1%
Child poverty is below the national average.
Children under 1813.2%
Working age (18–64)10.6%
Seniors (65+)9.1%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
96.4%
speak English only
Spanish2.2%
Other Indo-European0.7%
Asian & Pacific Islander0.5%
Other languages0.3%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 52.3% of residents not counted as adherents by any reporting body.
Madison County sits across the Mississippi from St. Louis and was reliably competitive into the 2000s, but its largely white working-class electorate has moved toward Republican margins now exceeding 13 points in presidential contests.
The Republican margin here reached twenty-seven points in 1920. The 2024 margin was thirteen points.
A population of 264,238, a 83% non-Hispanic-white share, and a median household income of $75,793 describe the county. The county's voting pattern over the last decade is most similar to that of Lake County and Fulton County.
Most similar counties
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.
Madison County, Illinois. Akashic. https://akashic.app/county/17119/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Madison County, Illinois vote in 2024?
In 2024, Madison County, Illinois voted Republican by 13.2 points (R+13), carried by the Republican candidate. Out of 133,072 votes cast, 56,341 went Democratic and 73,925 went Republican.
What is Madison County, Illinois's political typology?
Akashic places Madison County, Illinois in the "Stable Rural Right" typology — Mountain, Plains, and rural Republican counties already near their ceiling, with little further room to swing. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 19 times, Republican 15 times, and other 0 times.
When did Madison County, Illinois last vote Democratic?
The most recent presidential election in which Madison County, Illinois voted Democratic was 2008.
How many people live in Madison County, Illinois?
Madison County, Illinois has a population of 264,238 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Madison County, Illinois?
Median household income in Madison County, Illinois is $75,793 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Madison County, Illinois?
Akashic tracks 38 presidential elections in Madison County, Illinois from 1876 to 2024. Of those, 19 went Democratic and 15 went Republican. The county's typology — "Stable Rural Right" — captures where that record, its demographics, and its recent swing place it among American communities.