HarrisDemocratic14.6%1,023TrumpRepublican84.2%5,899KennedyWe The People0.5%38
R+69.6- Lead
- 4,876
- Total
- 7,002
- vs nation
- R+68.2
- Turnout
- 81.9%
Akashiccounty
Lyon County, IA
Contests in this Place (88 available)
President34 · 1892–2024 · 3 mapped
▦ precinct · ▥ counties · ▢ no spatial detail
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1892–2024.
President results by year
2024 turnout 81.9% of 8,605 citizens 18+
BidenDemocratic15.5%1,067TrumpRepublican83.2%5,707JorgensenLibertarian0.8%56
R+67.6- Lead
- 4,640
- Total
- 6,863
- vs nation
- R+72.1
- Turnout
- 83.4%
ClintonDemocratic14.3%920TrumpRepublican80.7%5,192JohnsonLibertarian2.1%137
R+66.4- Lead
- 4,272
- Total
- 6,431
- vs nation
- R+68.5
- Turnout
- 76.9%
ObamaDemocratic21.9%1,423RomneyRepublican76.5%4,978JohnsonLibertarian0.6%39
R+54.6- Lead
- 3,555
- Total
- 6,509
- vs nation
- R+58.5
- Turnout
- —
ObamaDemocratic26.9%1,675McCainRepublican71.9%4,471OtherAll other candidates1.1%71
R+45.0- Lead
- 2,796
- Total
- 6,217
- vs nation
- R+52.2
- Turnout
- —
KerryDemocratic21.4%1,303BushRepublican77.9%4,751OtherAll other candidates0.8%47
R+56.5- Lead
- 3,448
- Total
- 6,101
- vs nation
- R+54.1
- Turnout
- —
GoreDemocratic24.6%1,313BushRepublican73.3%3,918NaderGreen1.3%68
R+48.8- Lead
- 2,605
- Total
- 5,342
- vs nation
- R+49.3
- Turnout
- —
ClintonDemocratic27.8%1,489DoleRepublican63.5%3,396PerotReform7.9%422
R+35.6- Lead
- 1,907
- Total
- 5,352
- vs nation
- R+44.2
- Turnout
- —
Key facts
- 2024 presidential margin
- R+69.6MIT Election Lab
- Population
- 12,1622024 5-year
- Population density
- 21 / sq mi2024 5-year · TIGER/Line
- Land area
- 588 sq miTIGER/Line
- Median household income
- $76,7462024 5-year
- White (non-Hispanic)
- 93.4%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 3.9%2024 5-year
- Peak Democratic margin
- D+35.1 in 1932MIT Election Lab
- Peak Republican margin
- R+69.6 in 2024MIT Election Lab
- Most similar
- O'Brien County, IA · twin score 94.9
Turnout and midterm durability
Participation measured against the same-year citizen voting-age population. Audited cycles count total general-election participants — ballots or participating voters, not presidential candidate votes. Cycles before 2016 predate that series and are derived from the certified presidential returns instead; they are marked everywhere they appear and are excluded from the figures below.
2004–20248 cycles · 5 audited
- 2024 turnout
- 81.9%7,046 participants ÷ 8,605 CVAP
- 2020→2022 drop-off
- +24.4 ptsPresidential-dependent
- Drop-off vs state
- +3.4 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026
- 57.5%–62.8%Recent-cycle and two-cycle persistence scenarios; not a forecast
Participation by cycle
Presidential Midterm Derived, pre-2016
Select a presidential cycle to show it on the map and results ledger above.
| Cycle | Participants | CVAP | Turnout | Series | Quality |
|---|---|---|---|---|---|
| 7,046 | 8,605 ± 76 | 81.9% | Audited | A/A | |
| 2022Mid | 5,026 | 8,525 ± 66 | 59.0% | Audited | A/A |
| 6,924 | 8,305 ± 46 | 83.4% | Audited | A/A | |
| 2018Mid | 5,247 | 8,316 ± 42 | 63.1% | Audited | A/A |
| 6,431 | 8,358 ± 50 | 76.9% | Audited | A/A | |
| 6,509 | 8,335 | 78.1% | Derived | — | |
| 6,217 | 8,233 | 75.5% | Derived | — | |
| 6,101 | 8,131 extrapolated | 75.0% | Derived | — |
Sources and methods
Audited cycles (2016, 2018, 2020, 2022, 2024) count total general-election participants against the same-year CVAP special tabulation, each cell carrying its own numerator and denominator quality grade. Derived cycles (2004, 2008, 2012) come from the certified presidential returns on this page over the ACS 5-year CVAP series, so they measure presidential votes cast rather than ballots — a floor on participation. Where a derived cycle predates the ACS its denominator is extrapolated rather than read, and says so on its own line below. They are shown for the longer arc and are excluded from the drop-off, excess-drop-off, and 2026 scenario figures above.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 306/183.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 293/111.
- 2012 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
- 2008 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
- 2004 (derived): Certified presidential returns · extrapolated CVAP denominator; presidential votes cast — a floor on participation, not a ballot count; 2004 predates the ACS, so the denominator is a linear back-extrapolation from the 2008 and 2012 CVAP values, not a read figure.
Interactive election map
One map. Every available contest.
The map and local result cover Lyon County only. The complete contest result is shown below for comparison.
Lyon County result
0 precinct units · 0 candidate votes
Rob Sand0—
Write-in0—
Governor contest result
Loading the complete contest result…
Explore precinct resultsSearch, sort, compare years, or export CSV · 10 precincts
Precinct data
Results by precinct
10 precincts · 6,984 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -Pct 3 Rock Rapids NPct 3 Rock Rapids N | 226 | 1,096 | 21 | 1,343 | 16.8% | 81.6% | R+64.8 |
|---|---|---|---|---|---|---|---|
| Precinct -Pct 10 LarchwoodPct 10 Larchwood | 293 | 805 | 9 | 1,107 | 26.5% | 72.7% | R+46.3 |
| Precinct -Pct 6 InwoodPct 6 Inwood | 122 | 947 | 7 | 1,076 | 11.3% | 88.0% | R+76.7 |
| Precinct -Pct 1 GeorgePct 1 George | 135 | 791 | 10 | 936 | 14.4% | 84.5% | R+70.1 |
| Precinct -Pct 5 DoonPct 5 Doon | 37 | 701 | 6 | 744 | 5.0% | 94.2% | R+89.2 |
| Precinct -Pct 4 Rock Rapids SPct 4 Rock Rapids S | 105 | 556 | 2 | 663 | 15.8% | 83.9% | R+68.0 |
| Precinct -Pct 2 Little RockPct 2 Little Rock | 50 | 441 | 3 | 494 | 10.1% | 89.3% | R+79.1 |
| Precinct -Pct 9 LesterPct 9 Lester | 33 | 295 | 2 | 330 | 10.0% | 89.4% | R+79.4 |
| Precinct -Pct 7 Logan SPct 7 Logan S | 21 | 215 | 2 | 238 | 8.8% | 90.3% | R+81.5 |
| Precinct -Pct 8 Logan NPct 8 Logan N | 1 | 52 | 0 | 53 | 1.9% | 98.1% | R+96.2 |
presidential history
Party record book
Lyon County, IA · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1932
66.9%
3,543 votes · D+35.1
Runner-up · Franklin D. Roosevelt, 1936 · 60.4%
Republican
Donald Trump2024
84.2%
5,899 votes · R+69.6
Runner-up · Donald Trump, 2020 · 83.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Franklin D. Roosevelt1936
3,590votes
60.4% of the vote · D+22.3
Runner-up · Franklin D. Roosevelt, 1932 · 3,543 votes
Republican
Donald Trump2024
5,899votes
84.2% of the vote · R+69.6
Runner-up · Donald Trump, 2020 · 5,707 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Franklin D. Roosevelt1932
+17.3pts D vs U.S.
Place D+35.1 · U.S. D+17.8
Runner-up · William J. Bryan, 1896 · +2.7 pts
Republican
Donald Trump2020
+72.1pts R vs U.S.
Place R+67.6 · U.S. D+4.5
Runner-up · Donald Trump, 2016 · +68.5 pts
current representation
Current officeholders
RJeff TaylorState Senate · 2
RSkyler WheelerState House · 4
Seats representing Lyon County, IA. A county elects none of these itself — they are the members for the 1 congressional, 1 state senate and 1 state house districts it falls inside, so parts of the county are represented by different members.
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+67.2
Presidential vote · 2024R+69.6
Registration and the presidential vote track closely here — within 2.5 points.
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 8,675 | 1,260 | 5,243 | 2,170 | 2 |
| 2010 | 8,462 | 1,164 | 5,233 | 2,060 | 5 |
| 2012 | 8,552 | 993 | 5,607 | 1,946 | 6 |
| 2014 | 8,482 | 957 | 5,594 | 1,927 | 4 |
| 2016 | 8,521 | 973 | 5,675 | 1,860 | 13 |
| 2018 | 8,513 | 870 | 5,898 | 1,724 | 21 |
| 2020 | 8,692 | 881 | 6,432 | 1,353 | 26 |
| 2022 | 8,673 | 824 | 6,435 | 1,393 | 21 |
| 2024 | 8,888 | 741 | 6,711 | 1,410 | 26 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−51 net domestic migration · 2025
20112025
Net −208 over 2011–2025 · gain loss
Arrivals reported $52,148 in average income, against $94,938 for residents who stayed — 45% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+46.2 on average — 23 points more Democratic-leaning than Lyon County, IA itself (R+69.6).
Where arrivals came from lean of each source
- Sioux County, IA37R+70.7
- Minnehaha County, SD27R+12.7
Where departures went households, 2022–23
- Sioux County, IA51
- Minnehaha County, SD32
- Lincoln County, SD24
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | +46 |
| 2012 | +37 |
| 2013 | −101 |
| 2014 | −70 |
| 2015 | −12 |
| 2016 | −48 |
| 2017 | −61 |
| 2018 | −42 |
| 2019 | −120 |
| 2021 | +67 |
| 2022 | +48 |
| 2023 | +44 |
| 2024 | +55 |
| 2025 | −51 |
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.
Across the recorded series it reached a Democratic high of 35.1 points in 1932 and a Republican high of 69.6 points in 2024. Between 2020 and 2024 the county moved 2.0 points toward the Republican candidate; the 2024 margin was 69.6 points.
A population of 12,162, a 93% non-Hispanic-white share, and a median household income of $76,746 describe the county. The county's voting pattern over the last decade is most similar to that of O'Brien County and Pierce County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
O'Brien County
Iowa
94.9twin score
2012–2024 trajectory
Pierce County
Nebraska
93.7twin score
2000–2020 trajectory≠ % Evangelical
Clay County
Nebraska
90.5twin score
2000–2012 trajectory≠ English ancestry
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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.
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Cities & towns in Lyon County
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Frequently asked questions
How did Lyon County, Iowa vote in 2024?
In 2024, Lyon County, Iowa voted Republican by 69.6 points (R+69.6), carried by the Republican candidate. Out of 7,002 votes cast, 1,023 went Democratic and 5,899 went Republican.
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.