Cass County, Iowa
Precinct data
Results by precinct
12 precincts · 7,195 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -Grant/Anita/Lincoln/Benton/Franklin/WiotaGrant/Anita/Lincoln/Benton/Franklin/Wiota | 278 | 704 | 16 | 998 | 27.9% | 70.5% | R+42.7 |
|---|---|---|---|---|---|---|---|
| Precinct -Noble/ Pleasant/ GriswoldNoble/ Pleasant/ Griswold | 202 | 611 | 13 | 826 | 24.5% | 74.0% | R+49.5 |
| Precinct -Atlantic Ward 5Atlantic Ward 5 | 265 | 532 | 14 | 811 | 32.7% | 65.6% | R+32.9 |
| Precinct -Atlantic Ward 4Atlantic Ward 4 | 242 | 527 | 10 | 779 | 31.1% | 67.7% | R+36.6 |
| Precinct -Atlantic Ward 3Atlantic Ward 3 | 259 | 502 | 13 | 774 | 33.5% | 64.9% | R+31.4 |
| Precinct -Brighton/ Marne/ Grove/ Pymosa/ WashingtonBrighton/ Marne/ Grove/ Pymosa/ Washington | 149 | 546 | 9 | 704 | 21.2% | 77.6% | R+56.4 |
| Precinct -Atlantic Ward 1Atlantic Ward 1 | 204 | 371 | 11 | 586 | 34.8% | 63.3% | R+28.5 |
| Precinct -Atlantic Ward 2Atlantic Ward 2 | 199 | 324 | 8 | 531 | 37.5% | 61.0% | R+23.5 |
| Precinct -Bear Grove/ Cass/ LewisBear Grove/ Cass/ Lewis | 136 | 358 | 5 | 499 | 27.3% | 71.7% | R+44.5 |
| Precinct -Union Twp And CumberlandUnion Twp And Cumberland | 32 | 199 | 6 | 237 | 13.5% | 84.0% | R+70.5 |
| Precinct -West Massena Twp/MassenaWest Massena Twp/Massena | 69 | 161 | 6 | 236 | 29.2% | 68.2% | R+39.0 |
| Precinct -Victoria/Edna/East Massena TwpVictoria/Edna/East Massena Twp | 42 | 172 | 0 | 214 | 19.6% | 80.4% | R+60.7 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −7.0% |
| 1896 | −13.6% |
| 1900 | −21.5% |
| 1904 | −35.6% |
| 1908 | −25.0% |
| 1912 | −4.8% |
| 1916 | −20.8% |
| 1920 | −58.3% |
| 1924 | −55.5% |
| 1928 | −39.5% |
| 1932 | +1.4% |
| 1936 | −13.4% |
| 1940 | −25.7% |
| 1944 | −31.3% |
| 1948 | −20.3% |
| 1952 | −51.5% |
| 1956 | −36.8% |
| 1960 | −34.5% |
| 1964 | −2.1% |
| 1968 | −39.8% |
| 1972 | −45.6% |
| 1976 | −22.8% |
| 1980 | −39.6% |
| 1984 | −35.0% |
| 1988 | −14.8% |
| 1992 | −13.4% |
| 1996 | −11.2% |
| 2000 | −25.1% |
| 2004 | −28.1% |
| 2008 | −10.8% |
| 2012 | −18.9% |
| 2016 | −39.0% |
| 2020 | −38.0% |
| 2024 | −40.6% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 28.9%1,502 | 71.1%3,698 | 5,200 |
| 2020 | R | 31.6%2,259 | 66.0%4,725 | 7,158 |
Registered voters
By party of registration, over time
Registration leans Republican; the presidential vote runs 4.0 points more Democratic.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 10,776 | 2,130 | 5,103 | 3,542 | 1 |
| 2010 | 10,960 | 1,942 | 5,533 | 3,480 | 5 |
| 2012 | 10,639 | 1,823 | 5,235 | 3,573 | 8 |
| 2014 | 10,288 | 1,705 | 5,049 | 3,523 | 11 |
| 2016 | 10,042 | 1,633 | 5,095 | 3,288 | 26 |
| 2018 | 9,706 | 1,585 | 4,873 | 3,209 | 39 |
| 2020 | 9,949 | 1,789 | 5,017 | 3,084 | 59 |
| 2022 | 9,619 | 1,606 | 4,949 | 3,000 | 64 |
| 2024 | 9,634 | 1,525 | 5,055 | 2,984 | 70 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+39 net domestic migration · 2025
Net −471 over 2011–2025 · gain loss
Arrivals reported $46,471 in average income, against $79,134 for residents who stayed — 41% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+17.0 on average — 24 points more Democratic-leaning than Cass County, IA itself (R+40.6).
Where arrivals came from lean of each source
- Pottawattamie County, IA39R+19.9
- Montgomery County, IA22R+39.0
- Douglas County, NE22D+10.1
Where departures went households, 2022–23
- Pottawattamie County, IA40
- Polk County, IA32
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 | −130 |
| 2012 | −14 |
| 2013 | −108 |
| 2014 | −114 |
| 2015 | +19 |
| 2016 | −126 |
| 2017 | +10 |
| 2018 | −159 |
| 2019 | −77 |
| 2021 | +43 |
| 2022 | +129 |
| 2023 | +61 |
| 2024 | −44 |
| 2025 | +39 |
Cass County has delivered Republican presidential margins exceeding 35 points in each of the last three cycles, reflecting the heavily Republican drift of Iowa's rural, agriculture-dependent southwest corner.
Across the recorded series it reached a Democratic high of 1.4 points in 1932 and a Republican high of 58.3 points in 1920. Between 2020 and 2024 the county moved 2.6 points toward the Republican candidate; the 2024 margin was 40.6 points.
A population of 13,096, a 94% non-Hispanic-white share, and a median household income of $63,013 describe the county. The county's voting pattern over the last decade is most similar to that of Richland County and Harrison 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 →
Cass County, Iowa. Akashic. https://akashic.app/county/19029/. Accessed May 20, 2026. License: CC BY 4.0.