Lyon County, Iowa
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 margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 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% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 13.4%662 | 86.6%4,277 | 4,939 |
| 2020 | R | 15.9%1,073 | 81.8%5,522 | 6,749 |
Registered voters
By party of registration, over time
Registration and the presidential vote track closely here — within 2.5 points.
| 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 |
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
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.
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
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 →
Lyon County, Iowa. Akashic. https://akashic.app/county/19119/. Accessed May 20, 2026. License: CC BY 4.0.