Trempealeau County, Wisconsin: Heartland Swing county. In 2024, voted R+21%. Republican peak: R+72 in 1920.
Key facts
- 2024 presidential margin
- R+21MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 30,8392024 5-year
- Median household income
- $76,3132024 5-year
- White (non-Hispanic)
- 84.9%2024 5-year
- Black
- 0.3%2024 5-year
- Hispanic / Latino
- 13.0%2024 5-year
- Peak Democratic margin
- D+33 in 1932MIT Election Lab
- Peak Republican margin
- R+72 in 1920MIT Election Lab
- Most similar
- Jackson County, WI · similarity 0.98
2024 results by precinct
2024 precinct map of Trempealeau CountyPrecinct-level 2024 presidential results for Trempealeau County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
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 | −15.1% |
| 1896 | −39.1% |
| 1900 | −46.0% |
| 1904 | −54.7% |
| 1908 | −53.4% |
| 1912 | −13.4% |
| 1916 | −14.7% |
| 1920 | −71.5% |
| 1924 | −25.7% |
| 1928 | −30.6% |
| 1932 | +33.2% |
| 1936 | +26.3% |
| 1940 | −1.4% |
| 1944 | −2.4% |
| 1948 | +12.5% |
| 1952 | −23.5% |
| 1956 | −8.7% |
| 1960 | −2.9% |
| 1964 | +31.9% |
| 1968 | −9.3% |
| 1972 | −14.8% |
| 1976 | +7.5% |
| 1980 | −5.0% |
| 1984 | −5.2% |
| 1988 | +11.7% |
| 1992 | +20.3% |
| 1996 | +26.1% |
| 2000 | +13.8% |
| 2004 | +15.6% |
| 2008 | +26.4% |
| 2012 | +14.1% |
| 2016 | −12.6% |
| 2020 | −16.6% |
| 2024 | −21.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 6,219 | 9,661 | 16,079 | ||
| R | 6,285 | 8,833 | 15,380 | ||
| R | 5,636 | 7,366 | 13,687 | ||
| D | 7,605 | 5,707 | 13,481 | ||
| D | 8,321 | 4,808 | 13,314 | ||
| D | 8,075 | 5,878 | 14,062 | ||
| D | 6,678 | 5,002 | 12,168 | ||
| D | 5,848 | 3,035 | 10,794 | ||
| D | 6,218 | 3,577 | 13,012 | ||
| D | 6,212 | 4,902 | 11,175 | ||
| R | 5,407 | 6,008 | 11,500 | ||
| R | 5,390 | 5,992 | 12,101 | ||
| D | 6,218 | 5,341 | 11,722 | ||
| R | 4,232 | 5,723 | 10,095 | ||
| R | 3,971 | 4,861 | 9,589 | ||
| D | 6,320 | 3,264 | 9,589 | ||
| R | 5,223 | 5,539 | 10,781 | ||
| R | 4,602 | 5,476 | 10,094 | ||
| R | 4,021 | 6,501 | 10,548 | ||
| D | 4,711 | 3,650 | 8,463 | ||
| R | 4,496 | 4,719 | 9,242 | ||
| R | 5,175 | 5,319 | 10,579 | ||
| D | 5,929 | 3,339 | 9,832 | ||
| D | 5,786 | 2,874 | 8,759 | ||
| R | 2,963 | 5,596 | 8,613 | ||
| O | 373 | 2,083 | 6,664 | ||
| R | 718 | 4,748 | 5,636 | ||
| R | 1,578 | 2,138 | 3,815 | ||
| R | 1,235 | 1,763 | 3,948 | ||
| R | 1,085 | 3,733 | 4,957 | ||
| R | 981 | 3,560 | 4,713 | ||
| R | 1,190 | 3,364 | 4,723 | ||
| R | 1,394 | 3,306 | 4,886 | ||
| R | 1,521 | 2,116 | 3,952 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
32.7%
Polish
14.3%
Irish
6.4%
English
4.7%
American
2.7%
French
1.5%
Italian
1.3%
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: 39.9 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
$76,313
Trempealeau County ranks in the top 25% of US counties.
Trempealeau County$76,313
Wisconsin$77,485
United States$80,734
Trempealeau 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
9.9%
Child poverty is below the national average.
Children under 1812.7%
Working age (18–64)8.9%
Seniors (65+)9.2%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
89.0%
speak English only
Spanish9.4%
Other Indo-European1.2%
Asian & Pacific Islander0.3%
Other languages0.1%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 40.9% of residents not counted as adherents by any reporting body.
Trempealeau County sits along the Wisconsin–Minnesota border where the Mississippi River defines both its geography and its economy. Once reliably competitive, it has shifted toward Republican presidential margins exceeding 20 points as its largely rural, non-college workforce realigned through the 2010s and 2020s.
The Democratic margin here peaked at thirty-three points in 1932. Between 2020 and 2024 the county moved five points toward the Republican candidate; the 2024 margin was twenty-one points.
A population of 30,839, a 85% non-Hispanic-white share, and a median household income of $76,313 describe the county. The county's voting pattern over the last decade is most similar to that of Jackson County and Freeborn 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.
Trempealeau County, Wisconsin. Akashic. https://akashic.app/county/55121/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Trempealeau County, Wisconsin vote in 2024?
In 2024, Trempealeau County, Wisconsin voted Republican by 21.4 points (R+21), carried by the Republican candidate. Out of 16,079 votes cast, 6,219 went Democratic and 9,661 went Republican.
What is Trempealeau County, Wisconsin's political typology?
Akashic places Trempealeau County, Wisconsin in the "Heartland Swing" typology — Industrial Midwest swing counties drifting steadily toward the Republican Party. 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 12 times, Republican 21 times, and other 1 times.
When did Trempealeau County, Wisconsin last vote Democratic?
The most recent presidential election in which Trempealeau County, Wisconsin voted Democratic was 2012.
How many people live in Trempealeau County, Wisconsin?
Trempealeau County, Wisconsin has a population of 30,839 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Trempealeau County, Wisconsin?
Median household income in Trempealeau County, Wisconsin is $76,313 — below the national median of $80,734. The Wisconsin state median is $77,485.
What is the political history of Trempealeau County, Wisconsin?
Akashic tracks 38 presidential elections in Trempealeau County, Wisconsin from 1876 to 2024. Of those, 12 went Democratic and 21 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.