Carroll County, Iowa
Precinct data
Results by precinct
13 precincts · 11,120 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -Carroll 2 North 1/2 Of Maple River TwpCarroll 2 North 1/2 Of Maple River Twp | 526 | 996 | 30 | 1,552 | 33.9% | 64.2% | R+30.3 |
|---|---|---|---|---|---|---|---|
| Precinct -Carroll 1 Grant TwpCarroll 1 Grant Twp | 438 | 992 | 21 | 1,451 | 30.2% | 68.4% | R+38.2 |
| Precinct -Carroll 3 South 1/2 Of Maple River TwpCarroll 3 South 1/2 Of Maple River Twp | 435 | 898 | 21 | 1,354 | 32.1% | 66.3% | R+34.2 |
| Precinct -Carroll 4Carroll 4 | 402 | 678 | 20 | 1,100 | 36.5% | 61.6% | R+25.1 |
| Precinct -EwoldtEwoldt | 264 | 688 | 12 | 964 | 27.4% | 71.4% | R+44.0 |
| Precinct -Glidden-RichlandGlidden-Richland | 214 | 677 | 3 | 894 | 23.9% | 75.7% | R+51.8 |
| Precinct -UnionUnion | 216 | 548 | 6 | 770 | 28.1% | 71.2% | R+43.1 |
| Precinct -Wheatland-KniestWheatland-Kniest | 136 | 533 | 5 | 674 | 20.2% | 79.1% | R+58.9 |
| Precinct -Sheridan-Grant-JasperSheridan-Grant-Jasper | 163 | 453 | 13 | 629 | 25.9% | 72.0% | R+46.1 |
| Precinct -Washington-RoselleWashington-Roselle | 113 | 398 | 4 | 515 | 21.9% | 77.3% | R+55.3 |
| Precinct -Pleasant Valley-NewtonPleasant Valley-Newton | 78 | 367 | 7 | 452 | 17.3% | 81.2% | R+63.9 |
| Precinct -ArcadiaArcadia | 94 | 315 | 8 | 417 | 22.5% | 75.5% | R+53.0 |
| Precinct -EdenEden | 74 | 271 | 3 | 348 | 21.3% | 77.9% | R+56.6 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +19.2% |
| 1896 | +7.8% |
| 1900 | +4.5% |
| 1904 | −5.6% |
| 1908 | +14.5% |
| 1912 | +38.8% |
| 1916 | −7.1% |
| 1920 | −47.8% |
| 1924 | −18.3% |
| 1928 | +20.8% |
| 1932 | +51.7% |
| 1936 | +28.8% |
| 1940 | +1.4% |
| 1944 | −0.4% |
| 1948 | +17.7% |
| 1952 | −28.7% |
| 1956 | −6.7% |
| 1960 | +20.6% |
| 1964 | +53.1% |
| 1968 | +9.6% |
| 1972 | +2.1% |
| 1976 | +12.9% |
| 1980 | −11.6% |
| 1984 | −0.6% |
| 1988 | +18.7% |
| 1992 | +3.8% |
| 1996 | +10.7% |
| 2000 | −4.3% |
| 2004 | −10.2% |
| 2008 | +3.7% |
| 2012 | −6.1% |
| 2016 | −31.2% |
| 2020 | −37.8% |
| 2024 | −41.8% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 28.7%2,327 | 71.3%5,773 | 8,100 |
| 2020 | R | 32.1%3,580 | 65.0%7,245 | 11,151 |
Registered voters
By party of registration, over time
Registration leans Republican; the presidential vote runs 21 points more Democratic.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 14,965 | 5,306 | 3,154 | 6,499 | 6 |
| 2010 | 14,927 | 4,616 | 4,026 | 6,273 | 12 |
| 2012 | 15,154 | 4,357 | 4,167 | 6,607 | 23 |
| 2014 | 15,161 | 4,181 | 4,133 | 6,801 | 46 |
| 2016 | 15,097 | 4,023 | 4,410 | 6,597 | 67 |
| 2018 | 14,415 | 3,744 | 4,422 | 6,164 | 85 |
| 2020 | 14,878 | 3,833 | 5,290 | 5,659 | 96 |
| 2022 | 14,859 | 3,440 | 5,649 | 5,660 | 110 |
| 2024 | 15,002 | 3,015 | 6,206 | 5,635 | 146 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−125 net domestic migration · 2025
Net −1,183 over 2011–2025 · gain loss
Arrivals reported $48,749 in average income, against $95,787 for residents who stayed — 49% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+34.6 on average — 7.3 points more Democratic-leaning than Carroll County, IA itself (R+41.8).
Where arrivals came from lean of each source
- Crawford County, IA47R+43.4
- Sac County, IA27R+51.5
- Polk County, IA25D+10.8
- Calhoun County, IA22R+46.7
Where departures went households, 2022–23
- Polk County, IA74
- Crawford County, IA36
- Calhoun County, IA22
- Greene County, IA21
- Dallas County, IA20
- Story County, IA20
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 | −4 |
| 2012 | −241 |
| 2013 | −119 |
| 2014 | −63 |
| 2015 | −108 |
| 2016 | −67 |
| 2017 | −112 |
| 2018 | −140 |
| 2019 | −8 |
| 2021 | +50 |
| 2022 | −166 |
| 2023 | −19 |
| 2024 | −61 |
| 2025 | −125 |
Carroll County's farming communities have shifted decisively Republican over the past decade, with the 2024 presidential margin exceeding 40 points — a pattern consistent with broader rural Iowa realignment away from its historically competitive roots.
Across the recorded series it reached a Democratic high of 53.1 points in 1964 and a Republican high of 47.8 points in 1920. Between 2020 and 2024 the county moved 4.1 points toward the Republican candidate; the 2024 margin was 41.8 points.
A population of 20,594, a 92% non-Hispanic-white share, and a median household income of $72,930 describe the county. The county's voting pattern over the last decade is most similar to that of Kossuth County and Delaware 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 →
Carroll County, Iowa. Akashic. https://akashic.app/county/19027/. Accessed May 20, 2026. License: CC BY 4.0.