Boone County, Iowa: Heartland Swing county. In 2024, voted R+21%. Republican peak: R+49 in 1920.
Key facts
- 2024 presidential margin
- R+21MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 26,6682024 5-year
- Median household income
- $83,5312024 5-year
- White (non-Hispanic)
- 94.1%2024 5-year
- Black
- 1.2%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+37 in 1964MIT Election Lab
- Peak Republican margin
- R+49 in 1920MIT Election Lab
- Most similar
- Wapello County, IA · similarity 0.98
2024 results by precinct
2024 precinct map of Boone CountyPrecinct-level 2024 presidential results for Boone 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 | −20.0% |
| 1896 | −14.2% |
| 1900 | −28.0% |
| 1904 | −46.0% |
| 1908 | −24.2% |
| 1912 | +13.6% |
| 1916 | −10.9% |
| 1920 | −48.6% |
| 1924 | −39.1% |
| 1928 | −41.6% |
| 1932 | +16.4% |
| 1936 | +25.5% |
| 1940 | +15.6% |
| 1944 | +10.9% |
| 1948 | +13.3% |
| 1952 | −23.2% |
| 1956 | −7.4% |
| 1960 | −8.0% |
| 1964 | +36.7% |
| 1968 | −0.4% |
| 1972 | −10.5% |
| 1976 | +9.6% |
| 1980 | −5.0% |
| 1984 | +6.0% |
| 1988 | +24.4% |
| 1992 | +14.4% |
| 1996 | +18.2% |
| 2000 | +5.3% |
| 2004 | +1.1% |
| 2008 | +7.6% |
| 2012 | +6.6% |
| 2016 | −13.6% |
| 2020 | −15.6% |
| 2024 | −21.5% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 5,895 | 9,199 | 15,403 | ||
| R | 6,303 | 8,695 | 15,340 | ||
| R | 5,541 | 7,484 | 14,310 | ||
| D | 7,512 | 6,556 | 14,388 | ||
| D | 7,356 | 6,293 | 13,929 | ||
| D | 7,027 | 6,870 | 14,009 | ||
| D | 6,270 | 5,625 | 12,249 | ||
| D | 6,446 | 4,293 | 11,835 | ||
| D | 5,913 | 4,148 | 12,219 | ||
| D | 7,232 | 4,381 | 11,686 | ||
| D | 6,485 | 5,746 | 12,277 | ||
| R | 5,126 | 5,732 | 12,087 | ||
| D | 6,595 | 5,413 | 12,263 | ||
| R | 5,057 | 6,271 | 11,551 | ||
| R | 5,219 | 5,260 | 11,096 | ||
| D | 7,699 | 3,543 | 11,335 | ||
| R | 5,759 | 6,761 | 12,527 | ||
| R | 5,815 | 6,740 | 12,564 | ||
| R | 4,896 | 7,901 | 12,947 | ||
| D | 5,541 | 4,183 | 10,222 | ||
| D | 6,062 | 4,868 | 11,003 | ||
| D | 7,168 | 5,227 | 12,469 | ||
| D | 7,080 | 4,110 | 11,629 | ||
| D | 5,293 | 3,694 | 9,722 | ||
| R | 3,049 | 7,521 | 10,742 | ||
| O | 702 | 4,980 | 10,928 | ||
| R | 2,240 | 7,093 | 9,980 | ||
| R | 2,338 | 2,955 | 5,638 | ||
| O | 1,601 | 802 | 5,880 | ||
| R | 1,958 | 3,368 | 5,836 | ||
| R | 1,148 | 3,830 | 5,833 | ||
| R | 2,264 | 4,151 | 6,741 | ||
| R | 2,801 | 3,741 | 6,630 | ||
| R | 1,925 | 2,959 | 5,163 | ||
| — | — | — | — | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
34.6%
English
12.6%
Irish
12.5%
American
4.5%
Scottish
2.2%
Italian
1.8%
French
1.5%
African American
1.0%
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: 42.4 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
$83,531
Boone County ranks in the top 25% of US counties.
Boone County$83,531
Iowa$75,059
United States$80,734
Boone 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
6.2%
Child poverty is below the national average.
Children under 187.2%
Working age (18–64)6.0%
Seniors (65+)4.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
97.4%
speak English only
Spanish2.0%
Other Indo-European0.3%
Asian & Pacific Islander0.3%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 53.8% of residents not counted as adherents by any reporting body.
Boone County, anchored by its small county-seat city, backed Republican presidential candidates by double digits throughout the 2010s before widening that margin to R+21.4 in 2024, reflecting broader rural Iowa realignment.
The Democratic margin here peaked at thirty-seven points in 1964. Between 2020 and 2024 the county moved six points toward the Republican candidate; the 2024 margin was twenty-one points.
A population of 26,668, a 94% non-Hispanic-white share, and a median household income of $83,531 describe the county. The county's voting pattern over the last decade is most similar to that of Wapello County and Cowlitz 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.
Boone County, Iowa. Akashic. https://akashic.app/county/19015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Boone County, Iowa vote in 2024?
In 2024, Boone County, Iowa voted Republican by 21.5 points (R+21), carried by the Republican candidate. Out of 15,403 votes cast, 5,895 went Democratic and 9,199 went Republican.
What is Boone County, Iowa's political typology?
Akashic places Boone County, Iowa 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 15 times, Republican 17 times, and other 2 times.
When did Boone County, Iowa last vote Democratic?
The most recent presidential election in which Boone County, Iowa voted Democratic was 2012.
How many people live in Boone County, Iowa?
Boone County, Iowa has a population of 26,668 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boone County, Iowa?
Median household income in Boone County, Iowa is $83,531 — above the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Boone County, Iowa?
Akashic tracks 38 presidential elections in Boone County, Iowa from 1876 to 2024. Of those, 15 went Democratic and 17 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.