Buchanan County, Iowa: Heartland Swing county. In 2024, voted R+28%. Republican peak: R+59 in 1920.
Key facts
- 2024 presidential margin
- R+28MIT Election Lab
- Political typology
- Heartland SwingAkashic typology
- Population
- 20,6942024 5-year
- Median household income
- $78,2362024 5-year
- White (non-Hispanic)
- 96.0%2024 5-year
- Black
- 0.6%2024 5-year
- Hispanic / Latino
- 1.9%2024 5-year
- Peak Democratic margin
- D+28 in 1964MIT Election Lab
- Peak Republican margin
- R+59 in 1920MIT Election Lab
- Most similar
- Worth County, IA · similarity 0.99
2024 results by precinct
2024 precinct map of Buchanan CountyPrecinct-level 2024 presidential results for Buchanan 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 | −6.9% |
| 1896 | −12.2% |
| 1900 | −17.4% |
| 1904 | −27.3% |
| 1908 | −14.5% |
| 1912 | +12.6% |
| 1916 | −24.6% |
| 1920 | −59.2% |
| 1924 | −42.5% |
| 1928 | −30.9% |
| 1932 | +6.3% |
| 1936 | +2.9% |
| 1940 | −9.5% |
| 1944 | −9.5% |
| 1948 | −2.1% |
| 1952 | −36.0% |
| 1956 | −22.1% |
| 1960 | −9.8% |
| 1964 | +27.6% |
| 1968 | −10.0% |
| 1972 | −18.4% |
| 1976 | −5.8% |
| 1980 | −15.2% |
| 1984 | −9.1% |
| 1988 | +15.4% |
| 1992 | +8.8% |
| 1996 | +21.8% |
| 2000 | +10.1% |
| 2004 | +7.7% |
| 2008 | +18.5% |
| 2012 | +13.9% |
| 2016 | −14.8% |
| 2020 | −20.9% |
| 2024 | −28.1% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 3,766 | 6,790 | 10,750 | ||
| R | 4,169 | 6,420 | 10,774 | ||
| R | 3,970 | 5,510 | 10,377 | ||
| D | 5,911 | 4,450 | 10,535 | ||
| D | 6,050 | 4,139 | 10,338 | ||
| D | 5,608 | 4,797 | 10,475 | ||
| D | 5,045 | 4,092 | 9,410 | ||
| D | 4,997 | 3,043 | 8,951 | ||
| D | 4,166 | 3,313 | 9,654 | ||
| D | 4,778 | 3,495 | 8,321 | ||
| R | 4,129 | 4,965 | 9,152 | ||
| R | 3,605 | 5,041 | 9,422 | ||
| R | 4,258 | 4,794 | 9,223 | ||
| R | 3,609 | 5,277 | 9,048 | ||
| R | 3,670 | 4,541 | 8,674 | ||
| D | 5,621 | 3,187 | 8,823 | ||
| R | 4,251 | 5,179 | 9,433 | ||
| R | 3,513 | 5,512 | 9,035 | ||
| R | 3,019 | 6,431 | 9,484 | ||
| R | 4,127 | 4,310 | 8,523 | ||
| R | 3,841 | 4,653 | 8,508 | ||
| R | 4,649 | 5,630 | 10,309 | ||
| D | 5,025 | 4,734 | 9,894 | ||
| D | 5,004 | 4,401 | 9,500 | ||
| R | 3,099 | 5,885 | 9,004 | ||
| R | 1,780 | 5,459 | 8,651 | ||
| R | 1,600 | 6,334 | 7,997 | ||
| R | 1,808 | 3,000 | 4,855 | ||
| D | 1,866 | 1,271 | 4,719 | ||
| R | 1,889 | 2,552 | 4,577 | ||
| R | 1,545 | 2,798 | 4,592 | ||
| R | 2,053 | 2,958 | 5,194 | ||
| R | 2,233 | 2,865 | 5,181 | ||
| R | 2,166 | 2,498 | 4,817 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
39.8%
Irish
15.3%
English
12.3%
American
5.6%
Scottish
1.8%
Italian
1.6%
French
1.5%
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: 40.3 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
$78,236
Buchanan County ranks in the top 25% of US counties.
Buchanan County$78,236
Iowa$75,059
United States$80,734
Buchanan 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
8.6%
Child poverty is below the national average.
Children under 188.7%
Working age (18–64)8.7%
Seniors (65+)6.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
96.0%
speak English only
Other Indo-European2.8%
Spanish1.1%
Asian & Pacific Islander0.1%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 48.3% of residents not counted as adherents by any reporting body.
Buchanan County's population of roughly 21,000 is anchored by Independence, the county seat, and sustained by agriculture and small manufacturing. Its R+28 margin in 2024 reflects a decades-long rural realignment that has outpaced neighboring counties.
The Democratic margin here peaked at twenty-eight points in 1964. Between 2020 and 2024 the county moved seven points toward the Republican candidate; the 2024 margin was twenty-eight points.
A population of 20,694, a 96% non-Hispanic-white share, and a median household income of $78,236 describe the county. The county's voting pattern over the last decade is most similar to that of Worth County and Jackson 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.
Buchanan County, Iowa. Akashic. https://akashic.app/county/19019/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More heartland swing counties
Frequently asked questions
How did Buchanan County, Iowa vote in 2024?
In 2024, Buchanan County, Iowa voted Republican by 28.1 points (R+28), carried by the Republican candidate. Out of 10,750 votes cast, 3,766 went Democratic and 6,790 went Republican.
What is Buchanan County, Iowa's political typology?
Akashic places Buchanan 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 11 times, Republican 23 times, and other 0 times.
When did Buchanan County, Iowa last vote Democratic?
The most recent presidential election in which Buchanan County, Iowa voted Democratic was 2012.
How many people live in Buchanan County, Iowa?
Buchanan County, Iowa has a population of 20,694 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Buchanan County, Iowa?
Median household income in Buchanan County, Iowa is $78,236 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Buchanan County, Iowa?
Akashic tracks 38 presidential elections in Buchanan County, Iowa from 1876 to 2024. Of those, 11 went Democratic and 23 went Republican. The county's typology — "Heartland Swing" — captures where that record, its demographics, and its recent swing place it among American communities.