Iowa County, Wisconsin: Heartland Swing county. In 2024, voted D+8%. Republican peak: R+67 in 1920.
Key facts
- 2024 presidential margin
- D+8MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 23,8672024 5-year
- Median household income
- $82,1822024 5-year
- White (non-Hispanic)
- 92.9%2024 5-year
- Black
- 0.8%2024 5-year
- Hispanic / Latino
- 2.3%2024 5-year
- Peak Democratic margin
- D+35 in 2008MIT Election Lab
- Peak Republican margin
- R+67 in 1920MIT Election Lab
- Most similar
- Rock County, WI · similarity 0.98
2024 results by precinct
2024 precinct map of Iowa CountyPrecinct-level 2024 presidential results for Iowa 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 | +1.2% |
| 1896 | −19.4% |
| 1900 | −29.2% |
| 1904 | −32.8% |
| 1908 | −17.1% |
| 1912 | +4.6% |
| 1916 | −0.9% |
| 1920 | −67.3% |
| 1924 | −31.7% |
| 1928 | −27.2% |
| 1932 | +19.2% |
| 1936 | +15.0% |
| 1940 | −10.4% |
| 1944 | −12.4% |
| 1948 | +2.2% |
| 1952 | −39.0% |
| 1956 | −24.1% |
| 1960 | −18.4% |
| 1964 | +17.0% |
| 1968 | −14.9% |
| 1972 | −16.5% |
| 1976 | +0.7% |
| 1980 | +1.0% |
| 1984 | −12.8% |
| 1988 | +0.3% |
| 1992 | +11.6% |
| 1996 | +20.5% |
| 2000 | +15.4% |
| 2004 | +14.1% |
| 2008 | +34.7% |
| 2012 | +30.5% |
| 2016 | +15.2% |
| 2020 | +13.7% |
| 2024 | +7.6% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 7,750 | 6,631 | 14,677 | ||
| D | 7,828 | 5,909 | 13,992 | ||
| D | 6,669 | 4,809 | 12,275 | ||
| D | 8,105 | 4,287 | 12,534 | ||
| D | 7,987 | 3,829 | 11,969 | ||
| D | 7,122 | 5,348 | 12,542 | ||
| D | 5,842 | 4,221 | 10,541 | ||
| D | 4,690 | 2,866 | 8,916 | ||
| D | 4,467 | 3,288 | 10,151 | ||
| D | 4,268 | 4,240 | 8,548 | ||
| R | 3,843 | 4,983 | 8,897 | ||
| D | 4,154 | 4,068 | 8,992 | ||
| D | 4,252 | 4,195 | 8,678 | ||
| R | 3,131 | 4,387 | 7,626 | ||
| R | 2,897 | 4,005 | 7,413 | ||
| D | 4,620 | 3,275 | 7,907 | ||
| R | 3,547 | 5,143 | 8,694 | ||
| R | 3,176 | 5,201 | 8,417 | ||
| R | 2,722 | 6,211 | 8,952 | ||
| D | 3,917 | 3,745 | 7,794 | ||
| R | 3,585 | 4,608 | 8,228 | ||
| R | 4,025 | 4,978 | 9,140 | ||
| D | 4,988 | 3,623 | 9,094 | ||
| D | 4,621 | 3,113 | 7,856 | ||
| R | 3,129 | 5,484 | 8,669 | ||
| O | 689 | 3,291 | 8,213 | ||
| R | 942 | 5,428 | 6,667 | ||
| R | 2,230 | 2,271 | 4,656 | ||
| D | 2,103 | 1,886 | 4,684 | ||
| R | 2,077 | 2,986 | 5,315 | ||
| R | 1,639 | 3,328 | 5,153 | ||
| R | 1,743 | 3,270 | 5,231 | ||
| R | 2,060 | 3,115 | 5,425 | ||
| D | 2,336 | 2,274 | 4,995 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
37.1%
English
15.4%
Irish
15.0%
American
3.0%
Italian
2.2%
French
2.2%
Polish
2.1%
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: 44.0 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
$82,182
Iowa County ranks in the top 25% of US counties.
Iowa County$82,182
Wisconsin$77,485
United States$80,734
Iowa 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
7.6%
Child poverty is below the national average.
Children under 188.2%
Working age (18–64)6.7%
Seniors (65+)14.4%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
97.7%
speak English only
Spanish1.2%
Other Indo-European0.6%
Asian & Pacific Islander0.5%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 42.2% of residents not counted as adherents by any reporting body.
Iowa County, Wisconsin posted a D+7.6 margin in 2024, an outlier relative to surrounding rural counties. Its mix of small-farm communities and proximity to university-influenced Dodgeville anchors a persistently center-left tilt.
The Democratic margin here peaked at thirty-five points in 2008. Between 2020 and 2024 the county moved six points toward the Republican candidate; the 2024 margin was eight points.
A population of 23,867, a 93% non-Hispanic-white share, and a median household income of $82,182 describe the county. The county's voting pattern over the last decade is most similar to that of Rock County and La Crosse 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.
Iowa County, Wisconsin. Akashic. https://akashic.app/county/55049/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Iowa County, Wisconsin vote in 2024?
In 2024, Iowa County, Wisconsin voted Democratic by 7.6 points (D+8), carried by the Democratic candidate. Out of 14,677 votes cast, 7,750 went Democratic and 6,631 went Republican.
What is Iowa County, Wisconsin's political typology?
Akashic places Iowa 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 18 times, Republican 15 times, and other 1 times.
When did Iowa County, Wisconsin last vote Republican?
The most recent presidential election in which Iowa County, Wisconsin voted Republican was 1984.
How many people live in Iowa County, Wisconsin?
Iowa County, Wisconsin has a population of 23,867 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Iowa County, Wisconsin?
Median household income in Iowa County, Wisconsin is $82,182 — above the national median of $80,734. The Wisconsin state median is $77,485.
What is the political history of Iowa County, Wisconsin?
Akashic tracks 38 presidential elections in Iowa County, Wisconsin from 1876 to 2024. Of those, 18 went Democratic and 15 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.