Cass County, Illinois: Florida Surge county. In 2024, voted R+43%. Republican peak: R+43 in 2024.
Key facts
- 2024 presidential margin
- R+43MIT Election Lab
- Political typology
- Florida SurgeAkashic typology
- Population
- 12,7842024 5-year
- Median household income
- $68,1252024 5-year
- White (non-Hispanic)
- 74.8%2024 5-year
- Black
- 4.0%2024 5-year
- Hispanic / Latino
- 22.9%2024 5-year
- Peak Democratic margin
- D+36 in 1912MIT Election Lab
- Peak Republican margin
- R+43 in 2024MIT Election Lab
- Most similar
- Vermilion County, IL · similarity 1.00
2024 results by precinct
2024 precinct map of Cass CountyPrecinct-level 2024 presidential results for Cass 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 | +17.0% |
| 1896 | +11.7% |
| 1900 | +17.2% |
| 1904 | +2.0% |
| 1908 | +12.6% |
| 1912 | +35.9% |
| 1916 | +16.0% |
| 1920 | −15.0% |
| 1924 | −3.0% |
| 1928 | −7.3% |
| 1932 | +34.4% |
| 1936 | +28.3% |
| 1940 | +3.9% |
| 1944 | +3.5% |
| 1948 | +5.3% |
| 1952 | −9.9% |
| 1956 | −10.1% |
| 1960 | −4.2% |
| 1964 | +21.9% |
| 1968 | −1.5% |
| 1972 | −22.3% |
| 1976 | +0.9% |
| 1980 | −21.0% |
| 1984 | −7.8% |
| 1988 | +6.4% |
| 1992 | +16.1% |
| 1996 | +10.9% |
| 2000 | −3.0% |
| 2004 | −11.8% |
| 2008 | +1.3% |
| 2012 | −13.4% |
| 2016 | −31.1% |
| 2020 | −37.7% |
| 2024 | −43.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 1,438 | 3,712 | 5,241 | ||
| R | 1,615 | 3,625 | 5,326 | ||
| R | 1,621 | 3,216 | 5,124 | ||
| R | 2,053 | 2,707 | 4,878 | ||
| D | 2,690 | 2,617 | 5,408 | ||
| R | 2,492 | 3,163 | 5,700 | ||
| R | 2,789 | 2,968 | 5,899 | ||
| D | 2,834 | 2,214 | 5,667 | ||
| D | 3,200 | 2,162 | 6,447 | ||
| D | 3,316 | 2,916 | 6,267 | ||
| R | 2,937 | 3,435 | 6,399 | ||
| R | 2,543 | 3,965 | 6,770 | ||
| D | 3,589 | 3,524 | 7,144 | ||
| R | 2,803 | 4,414 | 7,219 | ||
| R | 3,302 | 3,411 | 7,139 | ||
| D | 4,424 | 2,836 | 7,260 | ||
| R | 3,692 | 4,015 | 7,715 | ||
| R | 3,368 | 4,125 | 7,504 | ||
| R | 3,405 | 4,152 | 7,565 | ||
| D | 3,776 | 3,391 | 7,217 | ||
| D | 3,909 | 3,641 | 7,585 | ||
| D | 4,854 | 4,490 | 9,416 | ||
| D | 5,786 | 3,209 | 9,090 | ||
| D | 5,669 | 2,745 | 8,507 | ||
| R | 3,461 | 4,009 | 7,494 | ||
| R | 2,909 | 3,139 | 7,613 | ||
| R | 2,861 | 3,956 | 7,318 | ||
| D | 4,485 | 3,193 | 8,066 | ||
| D | 2,223 | 719 | 4,195 | ||
| D | 2,434 | 1,878 | 4,423 | ||
| D | 1,906 | 1,827 | 3,904 | ||
| D | 2,626 | 1,846 | 4,533 | ||
| D | 2,470 | 1,946 | 4,464 | ||
| D | 2,203 | 1,533 | 3,936 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
18.2%
English
8.9%
Irish
8.5%
American
4.3%
Scottish
1.1%
French
0.7%
Italian
0.6%
African American
3.2%
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: 38.3 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
$68,125
Cass County ranks near the middle of US counties.
Cass County$68,125
Illinois$83,390
United States$80,734
Cass 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
11.1%
Child poverty is below the national average.
Children under 1811.5%
Working age (18–64)10.6%
Seniors (65+)14.4%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
77.9%
speak English only
Spanish17.8%
Other Indo-European2.5%
Other languages1.1%
Asian & Pacific Islander0.7%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 41.8% of residents not counted as adherents by any reporting body.
Cass County's small population and deep rural character have pushed its presidential margins steadily rightward over the past decade, reaching R+43.4 in 2024 — among the widest gaps in a state where statewide results trend the opposite direction.
The Democratic margin here once reached thirty-six points in 1912. Between 2020 and 2024 the county moved six points toward the Republican candidate; the 2024 margin was forty-three points.
A population of 12,784, a 75% non-Hispanic-white share, and a median household income of $68,125 describe the county. The county's voting pattern over the last decade is most similar to that of Vermilion County and Crawford 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.
Cass County, Illinois. Akashic. https://akashic.app/county/17017/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Cass County, Illinois vote in 2024?
In 2024, Cass County, Illinois voted Republican by 43.4 points (R+43), carried by the Republican candidate. Out of 5,241 votes cast, 1,438 went Democratic and 3,712 went Republican.
What is Cass County, Illinois's political typology?
Akashic places Cass County, Illinois in the "Florida Surge" typology — Florida coastal and retiree counties that moved sharply Republican across the Trump era. 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 18 times, Republican 16 times, and other 0 times.
When did Cass County, Illinois last vote Democratic?
The most recent presidential election in which Cass County, Illinois voted Democratic was 2008.
How many people live in Cass County, Illinois?
Cass County, Illinois has a population of 12,784 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Cass County, Illinois?
Median household income in Cass County, Illinois is $68,125 — below the national median of $80,734. The Illinois state median is $83,390.
What is the political history of Cass County, Illinois?
Akashic tracks 38 presidential elections in Cass County, Illinois from 1876 to 2024. Of those, 18 went Democratic and 16 went Republican. The county's typology — "Florida Surge" — captures where that record, its demographics, and its recent swing place it among American communities.