Marshall County, Iowa
Precinct data
Results by precinct
11 precincts · 17,217 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -Marshalltown City Ward 3Marshalltown City Ward 3 | 1,552 | 1,680 | 44 | 3,276 | 47.4% | 51.3% | R+3.9 |
|---|---|---|---|---|---|---|---|
| Precinct -Marshalltown City Ward 2Marshalltown City Ward 2 | 1,408 | 1,344 | 50 | 2,802 | 50.2% | 48.0% | D+2.3 |
| Precinct -Marshalltown City Ward 4Marshalltown City Ward 4 | 1,262 | 1,246 | 40 | 2,548 | 49.5% | 48.9% | D+0.6 |
| Precinct -Marshalltown City Ward 1Marshalltown City Ward 1 | 789 | 628 | 22 | 1,439 | 54.8% | 43.6% | D+11.2 |
| Precinct -Green Castle LeGrandGreen Castle LeGrand | 396 | 961 | 22 | 1,379 | 28.7% | 69.7% | R+41.0 |
| Precinct -Eden Logan WashingtonEden Logan Washington | 344 | 860 | 15 | 1,219 | 28.2% | 70.5% | R+42.3 |
| Precinct -Jefferson Timber CreekJefferson Timber Creek | 335 | 798 | 17 | 1,150 | 29.1% | 69.4% | R+40.3 |
| Precinct -State CenterState Center | 341 | 730 | 21 | 1,092 | 31.2% | 66.8% | R+35.6 |
| Precinct -Bangor Liscomb TaylorBangor Liscomb Taylor | 324 | 677 | 22 | 1,023 | 31.7% | 66.2% | R+34.5 |
| Precinct -Marion ViennaMarion Vienna | 222 | 446 | 9 | 677 | 32.8% | 65.9% | R+33.1 |
| Precinct -Liberty Marietta MinervaLiberty Marietta Minerva | 161 | 445 | 6 | 612 | 26.3% | 72.7% | R+46.4 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −18.6% |
| 1896 | −26.1% |
| 1900 | −34.0% |
| 1904 | −47.8% |
| 1908 | −30.7% |
| 1912 | +18.4% |
| 1916 | −25.4% |
| 1920 | −60.7% |
| 1924 | −56.6% |
| 1928 | −46.5% |
| 1932 | −1.6% |
| 1936 | −7.7% |
| 1940 | −13.3% |
| 1944 | −13.1% |
| 1948 | −8.5% |
| 1952 | −34.5% |
| 1956 | −27.7% |
| 1960 | −20.6% |
| 1964 | +21.6% |
| 1968 | −18.2% |
| 1972 | −23.6% |
| 1976 | −4.7% |
| 1980 | −18.3% |
| 1984 | −10.2% |
| 1988 | +12.0% |
| 1992 | +8.3% |
| 1996 | +9.5% |
| 2000 | −2.6% |
| 2004 | −0.6% |
| 2008 | +9.4% |
| 2012 | +9.4% |
| 2016 | −8.2% |
| 2020 | −7.7% |
| 2024 | −15.5% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 40.9%5,060 | 59.1%7,307 | 12,367 |
| 2020 | R | 45.9%8,187 | 50.7%9,057 | 17,851 |
Registered voters
By party of registration, over time
Registration leans Republican; the presidential vote runs 11 points more Democratic.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 27,559 | 8,824 | 8,323 | 10,409 | 3 |
| 2010 | 27,412 | 8,494 | 8,646 | 10,265 | 7 |
| 2012 | 27,744 | 8,537 | 8,560 | 10,634 | 13 |
| 2014 | 26,175 | 7,840 | 8,046 | 10,255 | 34 |
| 2016 | 26,114 | 7,947 | 8,171 | 9,912 | 84 |
| 2018 | 24,824 | 7,634 | 7,629 | 9,381 | 180 |
| 2020 | 25,171 | 8,428 | 8,272 | 8,282 | 189 |
| 2022 | 24,693 | 7,829 | 8,366 | 8,300 | 198 |
| 2024 | 24,729 | 7,247 | 8,453 | 8,810 | 219 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−329 net domestic migration · 2025
Net −3,961 over 2011–2025 · gain loss
Arrivals reported $48,344 in average income, against $73,517 for residents who stayed — 34% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+8.2 on average — 7.3 points more Democratic-leaning than Marshall County, IA itself (R+15.5).
Where arrivals came from lean of each source
- Polk County, IA108D+10.8
- Tama County, IA88R+26.8
- Story County, IA61D+10.3
- Jasper County, IA31R+27.5
- Linn County, IA28D+9.9
- Grundy County, IA24R+41.7
Where departures went households, 2022–23
- Polk County, IA148
- Story County, IA92
- Tama County, IA60
- Jasper County, IA41
- Grundy County, IA29
- Linn County, IA28
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 | +43 |
| 2012 | −198 |
| 2013 | −311 |
| 2014 | −493 |
| 2015 | −493 |
| 2016 | −389 |
| 2017 | −108 |
| 2018 | −284 |
| 2019 | −591 |
| 2021 | −239 |
| 2022 | −288 |
| 2023 | −48 |
| 2024 | −233 |
| 2025 | −329 |
Marshall County's population centers on Marshalltown, a meatpacking hub with one of Iowa's largest Latino immigrant communities, yet the county has moved roughly 20 points toward Republicans over the past two presidential cycles.
Across the recorded series it reached a Democratic high of 21.6 points in 1964 and a Republican high of 60.7 points in 1920. Between 2020 and 2024 the county moved 7.8 points toward the Republican candidate; the 2024 margin was 15.5 points.
A population of 40,114, a 66% non-Hispanic-white share, and a median household income of $73,315 describe the county. The county's voting pattern over the last decade is most similar to that of Zavala County and Webb 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 →
Marshall County, Iowa. Akashic. https://akashic.app/county/19127/. Accessed May 20, 2026. License: CC BY 4.0.