Clarke County, Iowa: Florida Surge county. In 2024, voted R+42%. Republican peak: R+43 in 1920.
Key facts
- 2024 presidential margin
- R+42MIT Election Lab
- Political typology
- Florida SurgeAkashic typology
- Population
- 9,6622024 5-year
- Median household income
- $71,6412024 5-year
- White (non-Hispanic)
- 80.5%2024 5-year
- Black
- 0.1%2024 5-year
- Hispanic / Latino
- 16.8%2024 5-year
- Peak Democratic margin
- D+26 in 1964MIT Election Lab
- Peak Republican margin
- R+43 in 1920MIT Election Lab
- Most similar
- Greene County, IA · similarity 0.99
2024 results by precinct
2024 precinct map of Clarke CountyPrecinct-level 2024 presidential results for Clarke 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 | −18.4% |
| 1896 | −4.0% |
| 1900 | −15.1% |
| 1904 | −32.4% |
| 1908 | −17.5% |
| 1912 | +1.1% |
| 1916 | −12.1% |
| 1920 | −42.5% |
| 1924 | −37.2% |
| 1928 | −25.3% |
| 1932 | +18.2% |
| 1936 | +0.8% |
| 1940 | −8.1% |
| 1944 | −14.3% |
| 1948 | −2.1% |
| 1952 | −31.9% |
| 1956 | −12.1% |
| 1960 | −15.9% |
| 1964 | +26.4% |
| 1968 | −10.1% |
| 1972 | −16.0% |
| 1976 | +14.4% |
| 1980 | −18.2% |
| 1984 | −5.4% |
| 1988 | +16.0% |
| 1992 | +11.8% |
| 1996 | +16.6% |
| 2000 | +2.3% |
| 2004 | +2.7% |
| 2008 | +2.3% |
| 2012 | +1.5% |
| 2016 | −27.7% |
| 2020 | −35.9% |
| 2024 | −41.9% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 1,265 | 3,140 | 4,479 | ||
| R | 1,466 | 3,144 | 4,670 | ||
| R | 1,465 | 2,713 | 4,509 | ||
| D | 2,189 | 2,124 | 4,430 | ||
| D | 2,218 | 2,118 | 4,443 | ||
| D | 2,323 | 2,200 | 4,566 | ||
| D | 2,081 | 1,984 | 4,176 | ||
| D | 2,053 | 1,401 | 3,923 | ||
| D | 1,921 | 1,417 | 4,260 | ||
| D | 2,262 | 1,631 | 3,934 | ||
| R | 2,030 | 2,262 | 4,321 | ||
| R | 1,614 | 2,417 | 4,404 | ||
| D | 2,333 | 1,737 | 4,149 | ||
| R | 1,590 | 2,214 | 3,901 | ||
| R | 1,655 | 2,059 | 4,000 | ||
| D | 2,659 | 1,546 | 4,212 | ||
| R | 1,906 | 2,631 | 4,550 | ||
| R | 1,929 | 2,462 | 4,397 | ||
| R | 1,653 | 3,215 | 4,894 | ||
| R | 2,101 | 2,195 | 4,379 | ||
| R | 1,946 | 2,603 | 4,584 | ||
| R | 2,513 | 2,962 | 5,510 | ||
| D | 2,613 | 2,571 | 5,263 | ||
| D | 2,342 | 1,608 | 4,030 | ||
| R | 1,642 | 2,780 | 4,490 | ||
| R | 743 | 2,554 | 4,867 | ||
| R | 1,257 | 3,150 | 4,450 | ||
| R | 1,175 | 1,507 | 2,735 | ||
| D | 910 | 882 | 2,489 | ||
| R | 1,134 | 1,624 | 2,800 | ||
| R | 896 | 1,799 | 2,786 | ||
| R | 1,322 | 1,800 | 3,175 | ||
| R | 1,517 | 1,646 | 3,194 | ||
| R | 961 | 1,455 | 2,686 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
21.8%
English
13.3%
Irish
9.7%
American
4.6%
Italian
2.6%
French
1.9%
Scottish
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: 37.9 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
$71,641
Clarke County ranks near the middle of US counties.
Clarke County$71,641
Iowa$75,059
United States$80,734
Clarke 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
9.7%
Children face moderate poverty.
Children under 1816.4%
Working age (18–64)6.9%
Seniors (65+)12.2%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
88.8%
speak English only
Spanish7.7%
Other Indo-European2.9%
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 57.2% of residents not counted as adherents by any reporting body.
Clarke County's small-town and agricultural character has pushed its presidential margins steadily rightward over the past decade, hitting R+41.9 in 2024 — a spread that reflects broader rural Iowa's sharp partisan realignment.
The Democratic margin here once reached twenty-six points in 1964. Between 2020 and 2024 the county moved six points toward the Republican candidate; the 2024 margin was forty-two points.
A population of 9,662, a 81% non-Hispanic-white share, and a median household income of $71,641 describe the county. The county's voting pattern over the last decade is most similar to that of Greene County and Benton 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.
Clarke County, Iowa. Akashic. https://akashic.app/county/19039/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Clarke County, Iowa vote in 2024?
In 2024, Clarke County, Iowa voted Republican by 41.9 points (R+42), carried by the Republican candidate. Out of 4,479 votes cast, 1,265 went Democratic and 3,140 went Republican.
What is Clarke County, Iowa's political typology?
Akashic places Clarke County, Iowa 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 12 times, Republican 22 times, and other 0 times.
When did Clarke County, Iowa last vote Democratic?
The most recent presidential election in which Clarke County, Iowa voted Democratic was 2012.
How many people live in Clarke County, Iowa?
Clarke County, Iowa has a population of 9,662 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Clarke County, Iowa?
Median household income in Clarke County, Iowa is $71,641 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Clarke County, Iowa?
Akashic tracks 38 presidential elections in Clarke County, Iowa from 1876 to 2024. Of those, 12 went Democratic and 22 went Republican. The county's typology — "Florida Surge" — captures where that record, its demographics, and its recent swing place it among American communities.