Marshall County, Illinois: Farm Belt county. In 2024, voted R+36%. Republican peak: R+39 in 1920.
Key facts
- 2024 presidential margin
- R+36MIT Election Lab
- Political typology
- Farm BeltAkashic typology
- Population
- 11,6472024 5-year
- Median household income
- $71,5852024 5-year
- White (non-Hispanic)
- 92.8%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 3.5%2024 5-year
- Peak Democratic margin
- D+24 in 1912MIT Election Lab
- Peak Republican margin
- R+39 in 1920MIT Election Lab
- Most similar
- Warren County, PA · similarity 1.00
2024 results by precinct
2024 precinct map of Marshall CountyPrecinct-level 2024 presidential results for Marshall 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 | +6.9% |
| 1896 | −7.9% |
| 1900 | −7.2% |
| 1904 | −16.5% |
| 1908 | −4.7% |
| 1912 | +23.8% |
| 1916 | −15.4% |
| 1920 | −39.2% |
| 1924 | −30.0% |
| 1928 | −17.5% |
| 1932 | +13.2% |
| 1936 | +7.8% |
| 1940 | −15.0% |
| 1944 | −23.5% |
| 1948 | −20.1% |
| 1952 | −34.8% |
| 1956 | −35.9% |
| 1960 | −16.4% |
| 1964 | +5.2% |
| 1968 | −21.6% |
| 1972 | −35.0% |
| 1976 | −21.7% |
| 1980 | −36.4% |
| 1984 | −25.8% |
| 1988 | −13.3% |
| 1992 | +5.0% |
| 1996 | +3.3% |
| 2000 | −9.7% |
| 2004 | −14.1% |
| 2008 | −1.0% |
| 2012 | −14.2% |
| 2016 | −33.4% |
| 2020 | −34.5% |
| 2024 | −36.0% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 1,913 | 4,119 | 6,127 | ||
| R | 2,005 | 4,197 | 6,345 | ||
| R | 1,789 | 3,785 | 5,984 | ||
| R | 2,455 | 3,290 | 5,869 | ||
| R | 3,081 | 3,145 | 6,333 | ||
| R | 2,806 | 3,734 | 6,584 | ||
| R | 2,570 | 3,145 | 5,907 | ||
| D | 2,640 | 2,453 | 5,714 | ||
| D | 2,819 | 2,491 | 6,496 | ||
| R | 2,742 | 3,588 | 6,367 | ||
| R | 2,386 | 4,060 | 6,493 | ||
| R | 1,903 | 4,349 | 6,711 | ||
| R | 2,570 | 4,017 | 6,662 | ||
| R | 2,141 | 4,452 | 6,602 | ||
| R | 2,455 | 3,897 | 6,677 | ||
| D | 3,561 | 3,209 | 6,770 | ||
| R | 2,981 | 4,150 | 7,138 | ||
| R | 2,245 | 4,764 | 7,014 | ||
| R | 2,343 | 4,850 | 7,201 | ||
| R | 2,514 | 3,785 | 6,318 | ||
| R | 2,596 | 4,195 | 6,801 | ||
| R | 3,343 | 4,527 | 7,910 | ||
| D | 4,149 | 3,544 | 7,760 | ||
| D | 4,133 | 3,166 | 7,345 | ||
| R | 2,828 | 4,029 | 6,865 | ||
| R | 1,836 | 3,776 | 6,465 | ||
| R | 1,568 | 3,734 | 5,523 | ||
| R | 2,593 | 3,579 | 6,403 | ||
| D | 1,685 | 790 | 3,768 | ||
| R | 1,714 | 1,893 | 3,776 | ||
| R | 1,545 | 2,190 | 3,913 | ||
| R | 1,908 | 2,210 | 4,187 | ||
| R | 1,888 | 2,216 | 4,161 | ||
| D | 1,834 | 1,590 | 3,534 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
30.6%
Irish
15.4%
English
12.9%
American
7.0%
Italian
6.6%
Polish
4.0%
French
1.9%
Sample size too small to break out by ancestry reliably.
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: 46.1 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
$71,585
Marshall County ranks near the middle of US counties.
Marshall County$71,585
Illinois$83,390
United States$80,734
Marshall County ranks near the middle 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
11.4%
Child poverty is below the national average.
Children under 1814.8%
Working age (18–64)10.7%
Seniors (65+)9.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
97.1%
speak English only
Spanish2.4%
Other Indo-European0.5%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 65.8% of residents not counted as adherents by any reporting body.
Marshall County sits in the Illinois River valley with a small, aging population that has shifted decisively toward Republican presidential candidates since 2000, recording a 36-point margin in 2024.
The Republican margin here reached thirty-nine points in 1920. Between 2020 and 2024 the county moved one point toward the Republican candidate; the 2024 margin was thirty-six points.
A population of 11,647, a 93% non-Hispanic-white share, and a median household income of $71,585 describe an agricultural county. The county's voting pattern over the last decade is most similar to that of Warren County and Spencer 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.
Marshall County, Illinois. Akashic. https://akashic.app/county/17123/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More farm belt counties
Frequently asked questions
How did Marshall County, Illinois vote in 2024?
In 2024, Marshall County, Illinois voted Republican by 36.0 points (R+36), carried by the Republican candidate. Out of 6,127 votes cast, 1,913 went Democratic and 4,119 went Republican.
What is Marshall County, Illinois's political typology?
Akashic places Marshall County, Illinois in the "Farm Belt" typology — Rural Plains and Midwest farm counties — Republican, with modest recent movement. 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 7 times, Republican 27 times, and other 0 times.
When did Marshall County, Illinois last vote Democratic?
The most recent presidential election in which Marshall County, Illinois voted Democratic was 1996.
How many people live in Marshall County, Illinois?
Marshall County, Illinois has a population of 11,647 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Marshall County, Illinois?
Median household income in Marshall County, Illinois is $71,585 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Marshall County, Illinois?
Akashic tracks 38 presidential elections in Marshall County, Illinois from 1876 to 2024. Of those, 7 went Democratic and 27 went Republican. The county's typology — "Farm Belt" — captures where that record, its demographics, and its recent swing place it among American communities.