Lyon County, Iowa: Farm Belt county. In 2024, voted R+70%. Republican peak: R+70 in 2024.
Key facts
- 2024 presidential margin
- R+70MIT Election Lab
- Political typology
- Farm BeltAkashic typology
- Population
- 12,1622024 5-year
- Median household income
- $76,7462024 5-year
- White (non-Hispanic)
- 93.7%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 3.9%2024 5-year
- Peak Democratic margin
- D+35 in 1932MIT Election Lab
- Peak Republican margin
- R+70 in 2024MIT Election Lab
- Most similar
- Clay County, NE · similarity 1.00
2024 results by precinct
2024 precinct map of Lyon CountyPrecinct-level 2024 presidential results for Lyon 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 | +0.9% |
| 1896 | −3.4% |
| 1900 | −12.4% |
| 1904 | −34.7% |
| 1908 | −20.9% |
| 1912 | +17.4% |
| 1916 | −21.2% |
| 1920 | −65.1% |
| 1924 | −33.8% |
| 1928 | −31.8% |
| 1932 | +35.1% |
| 1936 | +22.3% |
| 1940 | −18.8% |
| 1944 | −21.7% |
| 1948 | −6.9% |
| 1952 | −57.3% |
| 1956 | −41.7% |
| 1960 | −47.4% |
| 1964 | −7.4% |
| 1968 | −48.5% |
| 1972 | −45.3% |
| 1976 | −30.4% |
| 1980 | −47.0% |
| 1984 | −49.2% |
| 1988 | −34.4% |
| 1992 | −33.9% |
| 1996 | −35.6% |
| 2000 | −48.8% |
| 2004 | −56.5% |
| 2008 | −45.0% |
| 2012 | −54.6% |
| 2016 | −66.4% |
| 2020 | −67.6% |
| 2024 | −69.6% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 1,023 | 5,899 | 7,002 | ||
| R | 1,067 | 5,707 | 6,863 | ||
| R | 920 | 5,192 | 6,431 | ||
| R | 1,423 | 4,978 | 6,509 | ||
| R | 1,675 | 4,471 | 6,217 | ||
| R | 1,303 | 4,751 | 6,101 | ||
| R | 1,313 | 3,918 | 5,342 | ||
| R | 1,489 | 3,396 | 5,352 | ||
| R | 1,331 | 3,272 | 5,726 | ||
| R | 1,706 | 3,517 | 5,264 | ||
| R | 1,401 | 4,178 | 5,642 | ||
| R | 1,431 | 4,349 | 6,208 | ||
| R | 1,870 | 3,558 | 5,554 | ||
| R | 1,407 | 3,788 | 5,252 | ||
| R | 1,403 | 4,195 | 5,754 | ||
| R | 2,747 | 3,185 | 5,935 | ||
| R | 1,752 | 4,917 | 6,676 | ||
| R | 1,790 | 4,356 | 6,150 | ||
| R | 1,324 | 4,893 | 6,226 | ||
| R | 2,174 | 2,500 | 4,740 | ||
| R | 1,970 | 3,065 | 5,042 | ||
| R | 2,648 | 3,880 | 6,540 | ||
| D | 3,590 | 2,264 | 5,944 | ||
| D | 3,543 | 1,684 | 5,297 | ||
| R | 1,632 | 3,170 | 4,838 | ||
| O | 481 | 2,082 | 4,733 | ||
| R | 729 | 3,633 | 4,459 | ||
| R | 1,137 | 1,760 | 2,944 | ||
| O | 896 | 412 | 2,777 | ||
| R | 1,064 | 1,650 | 2,800 | ||
| R | 841 | 1,802 | 2,770 | ||
| R | 1,289 | 1,666 | 3,029 | ||
| R | 1,464 | 1,568 | 3,055 | ||
| D | 1,130 | 1,110 | 2,334 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
35.0%
Irish
5.8%
American
5.3%
English
2.6%
French
1.0%
Italian
0.9%
Scottish
0.8%
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: 38.2 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
$76,746
Lyon County ranks in the top 25% of US counties.
Lyon County$76,746
Iowa$75,059
United States$80,734
Lyon 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
5.3%
Child poverty is below the national average.
Children under 185.0%
Working age (18–64)4.2%
Seniors (65+)15.4%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
97.4%
speak English only
Spanish2.2%
Other Indo-European0.3%
Asian & Pacific Islander0.1%
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 34.4% of residents not counted as adherents by any reporting body.
Lyon County, anchored by Rock Rapids in Iowa's northwest corner, recorded an R+69.6 presidential margin in 2024 — among the widest in the state — reflecting a rural, predominantly Dutch Reformed community that has voted heavily Republican for decades.
The Republican margin here reached seventy points in 2024. Between 2020 and 2024 the county moved two points toward the Republican candidate; the 2024 margin was seventy points.
A population of 12,162, a 94% non-Hispanic-white share, and a median household income of $76,746 describe an agricultural county. The county's voting pattern over the last decade is most similar to that of Clay County and Merrick 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.
Lyon County, Iowa. Akashic. https://akashic.app/county/19119/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More farm belt counties
Frequently asked questions
How did Lyon County, Iowa vote in 2024?
In 2024, Lyon County, Iowa voted Republican by 69.6 points (R+70), carried by the Republican candidate. Out of 7,002 votes cast, 1,023 went Democratic and 5,899 went Republican.
What is Lyon County, Iowa's political typology?
Akashic places Lyon County, Iowa in the "Farm Belt" typology — Rural Plains and Midwest farm counties — Republican, with modest recent movement. 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 3 times, Republican 29 times, and other 2 times.
When did Lyon County, Iowa last vote Democratic?
The most recent presidential election in which Lyon County, Iowa voted Democratic was 1936.
How many people live in Lyon County, Iowa?
Lyon County, Iowa has a population of 12,162 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Lyon County, Iowa?
Median household income in Lyon County, Iowa is $76,746 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Lyon County, Iowa?
Akashic tracks 38 presidential elections in Lyon County, Iowa from 1876 to 2024. Of those, 3 went Democratic and 29 went Republican. The county's typology — "Farm Belt" — captures where that record, its demographics, and its recent swing place it among American communities.