HarrisDemocratic35.3%3,400TrumpRepublican63.0%6,068KennedyWe The People0.9%84
R+27.7- Lead
- 2,668
- Total
- 9,639
- vs nation
- R+26.2
- Turnout
- 77.1%
Akashiccounty
Iowa County, IA
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
President results by year
2024 turnout 77.1% of 12,584 citizens 18+
BidenDemocratic36.4%3,547TrumpRepublican61.7%6,009JorgensenLibertarian1.0%102
R+25.3- Lead
- 2,462
- Total
- 9,742
- vs nation
- R+29.7
- Turnout
- 79.2%
ClintonDemocratic34.3%3,084TrumpRepublican57.8%5,205JohnsonLibertarian3.5%317
R+23.6- Lead
- 2,121
- Total
- 9,002
- vs nation
- R+25.7
- Turnout
- 72.6%
ObamaDemocratic46.7%4,144RomneyRepublican51.5%4,569JohnsonLibertarian0.6%52
R+4.8- Lead
- 425
- Total
- 8,866
- vs nation
- R+8.6
- Turnout
- —
ObamaDemocratic49.2%4,202McCainRepublican49.0%4,188OtherAll other candidates1.8%156
D+0.2- Lead
- 14
- Total
- 8,546
- vs nation
- R+7.1
- Turnout
- —
KerryDemocratic45.4%3,841BushRepublican53.7%4,544OtherAll other candidates0.8%69
R+8.3- Lead
- 703
- Total
- 8,454
- vs nation
- R+5.9
- Turnout
- —
GoreDemocratic43.6%3,230BushRepublican52.5%3,894NaderGreen2.5%188
R+9.0- Lead
- 664
- Total
- 7,413
- vs nation
- R+9.5
- Turnout
- —
ClintonDemocratic47.7%3,354DoleRepublican43.2%3,042PerotReform8.2%575
D+4.4- Lead
- 312
- Total
- 7,035
- vs nation
- R+4.1
- Turnout
- —
Key facts
- 2024 presidential margin
- R+27.7MIT Election Lab
- Population
- 16,5072024 5-year
- Median household income
- $71,2232024 5-year
- White (non-Hispanic)
- 92.5%2024 5-year
- Black
- 0.3%2024 5-year
- Hispanic / Latino
- 3.4%2024 5-year
- Peak Democratic margin
- D+23.3 in 1932MIT Election Lab
- Peak Republican margin
- R+41.1 in 1920MIT Election Lab
- Most similar
- Benton County, IA · twin score 87.1
Midterm durability
Total general-election participants divided by same-year citizen voting-age population. These are total ballots or participating voters—not presidential candidate votes.
- 2024 total turnout
- 77.1%9,704 participants ÷ 12,584 CVAP
- 2020→2022 drop-off
- +19.4 ptsVolatile
- Drop-off versus state
- -1.6 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 57.7%–62.1%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 9,002 | 12,404 | 72.6% | A/A |
| 2018 · Midterm | 7,688 | 12,389 | 62.1% | A/A |
| 2020 · Presidential | 9,808 | 12,378 | 79.2% | A/A |
| 2022 · Midterm | 7,531 | 12,588 | 59.8% | A/A |
| 2024 · Presidential | 9,704 | 12,584 | 77.1% | A/A |
Sources and methods
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 293/111.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 306/183.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.
Precinct data
Results by precinct
11 precincts · 9,617 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -Williamsburg CityWilliamsburg City | 797 | 1,081 | 28 | 1,906 | 41.8% | 56.7% | R+14.9 |
|---|---|---|---|---|---|---|---|
| Precinct -Lenox IowaLenox Iowa | 695 | 929 | 19 | 1,643 | 42.3% | 56.5% | R+14.2 |
| Precinct -Marengo CityMarengo City | 473 | 714 | 29 | 1,216 | 38.9% | 58.7% | R+19.8 |
| Precinct -Pilot Troy YorkPilot Troy York | 227 | 594 | 9 | 830 | 27.3% | 71.6% | R+44.2 |
| Precinct -Fillmore GreeneFillmore Greene | 262 | 539 | 9 | 810 | 32.3% | 66.5% | R+34.2 |
| Precinct -Hilton WashingtonHilton Washington | 267 | 531 | 12 | 810 | 33.0% | 65.6% | R+32.6 |
| Precinct -Hartford 2 LincolnHartford 2 Lincoln | 165 | 471 | 17 | 653 | 25.3% | 72.1% | R+46.9 |
| Precinct -English 2English 2 | 209 | 372 | 13 | 594 | 35.2% | 62.6% | R+27.4 |
| Precinct -Honey Creek MarengoHoney Creek Marengo | 105 | 305 | 3 | 413 | 25.4% | 73.8% | R+48.4 |
| Precinct -Hartford 1 SumnerHartford 1 Sumner | 93 | 299 | 4 | 396 | 23.5% | 75.5% | R+52.0 |
| Precinct -Dayton English 1Dayton English 1 | 107 | 233 | 6 | 346 | 30.9% | 67.3% | R+36.4 |
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +12.2% |
| 1896 | −9.8% |
| 1900 | −8.0% |
| 1904 | −9.4% |
| 1908 | −7.6% |
| 1912 | +15.0% |
| 1916 | −16.8% |
| 1920 | −41.1% |
| 1924 | −30.6% |
| 1928 | −14.1% |
| 1932 | +23.3% |
| 1936 | +10.4% |
| 1940 | −12.3% |
| 1944 | −11.4% |
| 1948 | −9.0% |
| 1952 | −37.2% |
| 1956 | −27.3% |
| 1960 | −27.2% |
| 1964 | +20.2% |
| 1968 | −21.8% |
| 1972 | −23.3% |
| 1976 | −7.5% |
| 1980 | −20.6% |
| 1984 | −21.2% |
| 1988 | +1.4% |
| 1992 | −1.4% |
| 1996 | +4.4% |
| 2000 | −9.0% |
| 2004 | −8.3% |
| 2008 | +0.2% |
| 2012 | −4.8% |
| 2016 | −23.6% |
| 2020 | −25.3% |
| 2024 | −27.7% |
DemocraticRepublican
Federal and statewide elections · 3 House · 37 Senate · 2 Senate special · 12 governor
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.
U.S. Senate
Each row shows U.S. Senate votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
U.S. Senate special elections
Each row shows U.S. Senate special votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Governor
Each row shows Governor 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+21.4
Presidential vote · 2024R+27.7
Registration leans Republican; the presidential vote runs 6.3 points more Democratic.
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 12,011 | 3,109 | 3,610 | 5,292 | 0 |
| 2010 | 12,141 | 3,088 | 3,815 | 5,233 | 5 |
| 2012 | 12,242 | 3,019 | 3,934 | 5,283 | 6 |
| 2014 | 12,133 | 2,812 | 4,026 | 5,277 | 18 |
| 2016 | 12,318 | 2,840 | 4,205 | 5,226 | 47 |
| 2018 | 12,162 | 2,687 | 4,238 | 5,162 | 75 |
| 2020 | 12,474 | 2,930 | 5,007 | 4,440 | 97 |
| 2022 | 12,497 | 2,742 | 5,079 | 4,584 | 92 |
| 2024 | 12,553 | 2,553 | 5,243 | 4,651 | 106 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+33 net domestic migration · 2025
20112025
Net −272 over 2011–2025 · gain loss
Arrivals reported $57,615 in average income, against $85,357 for residents who stayed — 33% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+14.6 on average — 42 points more Democratic-leaning than Iowa County, IA itself (R+27.7).
Where arrivals came from lean of each source
- Johnson County, IA92D+37.8
- Linn County, IA57D+9.9
- Benton County, IA39R+33.2
Where departures went households, 2022–23
- Johnson County, IA73
- Linn County, IA65
- Benton County, IA35
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 | −24 |
| 2012 | −167 |
| 2013 | +113 |
| 2014 | +28 |
| 2015 | −52 |
| 2016 | −81 |
| 2017 | −74 |
| 2018 | +33 |
| 2019 | +34 |
| 2021 | −27 |
| 2022 | −47 |
| 2023 | −86 |
| 2024 | +45 |
| 2025 | +33 |
Iowa County sits in a stretch of small agricultural communities where population has drifted downward for decades, a pattern that correlates strongly with the lopsided presidential margins the county has recorded in recent elections.
Across the recorded series it reached a Democratic high of 23.3 points in 1932 and a Republican high of 41.1 points in 1920. Between 2020 and 2024 the county moved 2.4 points toward the Republican candidate; the 2024 margin was 27.7 points.
A population of 16,507, a 93% non-Hispanic-white share, and a median household income of $71,223 describe the county. The county's voting pattern over the last decade is most similar to that of Benton County and Buchanan County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Benton County
Iowa
87.1twin score
% White2008–2012 trajectoryGerman ancestry≠ Swedish ancestry
Buchanan County
Iowa
81.4twin score
% WhiteGerman ancestry% Black≠ 12-yr trend
Mitchell County
Iowa
81.1twin score
% White2008–2012 trajectoryGerman ancestry≠ Norwegian 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 →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Iowa County. Akashic. https://akashic.app/county/19095/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Iowa County
Iowa at the ballot boxAll elections →
Frequently asked questions
How did Iowa County vote in 2024?
In 2024, Iowa County voted Republican by 27.7 points (R+27.7), carried by the Republican candidate. Out of 9,639 votes cast, 3,400 went Democratic and 6,068 went Republican.
When did Iowa County last vote Democratic?
The most recent presidential election in which Iowa County voted Democratic was 2008.
How many people live in Iowa County?
Iowa County has a population of 16,507 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Iowa County?
Median household income in Iowa County is $71,223 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Iowa County?
Akashic tracks 38 presidential elections in Iowa County from 1876 to 2024. Of those, 8 went Democratic and 26 went Republican.