Bremer County, Iowa
Precinct data
Results by precinct
14 precincts · 14,556 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -#3 Dayton/Sumner #2/City of SUMNER#3 Dayton/Sumner #2/City of SUMNER | 442 | 997 | 12 | 1,451 | 30.5% | 68.7% | R+38.2 |
|---|---|---|---|---|---|---|---|
| Precinct -#10 City of WAVERLY WARD 1#10 City of WAVERLY WARD 1 | 625 | 687 | 15 | 1,327 | 47.1% | 51.8% | R+4.7 |
| Precinct -#14 City of WAVERLY WARD 5#14 City of WAVERLY WARD 5 | 672 | 615 | 22 | 1,309 | 51.3% | 47.0% | D+4.4 |
| Precinct -#4 Warren/Fremont/City of TRIPOLI#4 Warren/Fremont/City of TRIPOLI | 429 | 822 | 16 | 1,267 | 33.9% | 64.9% | R+31.0 |
| Precinct -#11 City of WAVERLY WARD 2#11 City of WAVERLY WARD 2 | 520 | 688 | 17 | 1,225 | 42.4% | 56.2% | R+13.7 |
| Precinct -#13 City of WAVERLY WARD 4#13 City of WAVERLY WARD 4 | 615 | 562 | 13 | 1,190 | 51.7% | 47.2% | D+4.5 |
| Precinct -#8 City of DENVER#8 City of DENVER | 403 | 721 | 19 | 1,143 | 35.3% | 63.1% | R+27.8 |
| Precinct -#6 Jackson/City of JANESVILLE#6 Jackson/City of JANESVILLE | 357 | 661 | 14 | 1,032 | 34.6% | 64.1% | R+29.5 |
| Precinct -#9 Maxfield/Franklin/City of READLYN#9 Maxfield/Franklin/City of READLYN | 221 | 742 | 14 | 977 | 22.6% | 75.9% | R+53.3 |
| Precinct -#7 Jefferson#7 Jefferson | 304 | 640 | 11 | 955 | 31.8% | 67.0% | R+35.2 |
| Precinct -#12 City of WAVERLY WARD 3#12 City of WAVERLY WARD 3 | 399 | 405 | 16 | 820 | 48.7% | 49.4% | R+0.7 |
| Precinct -#5 Lafayette/Washington#5 Lafayette/Washington | 301 | 484 | 9 | 794 | 37.9% | 61.0% | R+23.0 |
| Precinct -#2 Douglas/Frederika/Leroy/City of FREDERIKA#2 Douglas/Frederika/Leroy/City of FREDERIKA | 153 | 405 | 6 | 564 | 27.1% | 71.8% | R+44.7 |
| Precinct -#1 Polk Twp/City of PLAINFIELD#1 Polk Twp/City of PLAINFIELD | 130 | 370 | 2 | 502 | 25.9% | 73.7% | R+47.8 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | +10.6% |
| 1896 | −10.5% |
| 1900 | −6.0% |
| 1904 | −3.8% |
| 1908 | +7.4% |
| 1912 | +24.7% |
| 1916 | −40.3% |
| 1920 | −74.1% |
| 1924 | −35.9% |
| 1928 | −10.4% |
| 1932 | +36.2% |
| 1936 | +21.7% |
| 1940 | −26.7% |
| 1944 | −27.4% |
| 1948 | −4.5% |
| 1952 | −48.4% |
| 1956 | −34.4% |
| 1960 | −33.6% |
| 1964 | +13.0% |
| 1968 | −36.6% |
| 1972 | −33.4% |
| 1976 | −19.2% |
| 1980 | −28.1% |
| 1984 | −25.4% |
| 1988 | −1.2% |
| 1992 | +2.5% |
| 1996 | +8.0% |
| 2000 | −4.5% |
| 2004 | −5.0% |
| 2008 | +9.3% |
| 2012 | +2.7% |
| 2016 | −13.5% |
| 2020 | −16.1% |
| 2024 | −22.1% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 39.6%4,345 | 60.4%6,641 | 10,986 |
| 2020 | R | 40.9%5,911 | 56.7%8,196 | 14,445 |
Registered voters
By party of registration, over time
Registration leans Republican; the presidential vote runs 10 points more Democratic.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 | 18,049 | 4,616 | 5,369 | 8,060 | 4 |
| 2010 | 18,390 | 4,539 | 5,521 | 8,319 | 11 |
| 2012 | 18,203 | 4,408 | 5,548 | 8,231 | 16 |
| 2014 | 17,625 | 4,038 | 5,292 | 8,259 | 36 |
| 2016 | 17,609 | 4,234 | 5,526 | 7,777 | 72 |
| 2018 | 17,552 | 4,231 | 5,361 | 7,847 | 113 |
| 2020 | 18,196 | 4,862 | 5,895 | 7,328 | 111 |
| 2022 | 18,100 | 4,516 | 6,157 | 7,324 | 103 |
| 2024 | 18,296 | 4,178 | 6,334 | 7,685 | 99 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−67 net domestic migration · 2025
Net +405 over 2011–2025 · gain loss
Arrivals reported $59,407 in average income, against $92,543 for residents who stayed — 36% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+14.6 on average — 7.5 points more Democratic-leaning than Bremer County, IA itself (R+22.1).
Where arrivals came from lean of each source
- Black Hawk County, IA208D+1.2
- Butler County, IA50R+45.2
- Chickasaw County, IA37R+37.1
- Fayette County, IA25R+30.4
- Buchanan County, IA21R+28.1
- Floyd County, IA21R+25.6
Where departures went households, 2022–23
- Black Hawk County, IA200
- Butler County, IA46
- Fayette County, IA32
- Polk County, IA32
- Chickasaw County, IA24
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 | +60 |
| 2012 | +44 |
| 2013 | +19 |
| 2014 | −2 |
| 2015 | +7 |
| 2016 | −89 |
| 2017 | +4 |
| 2018 | +53 |
| 2019 | +48 |
| 2021 | +139 |
| 2022 | +126 |
| 2023 | +42 |
| 2024 | +21 |
| 2025 | −67 |
Bremer County's 2024 presidential margin of R+22.1 reflects a steady rightward shift in this northeastern Iowa county, where small manufacturing towns and agricultural land have both trended away from their earlier competitive patterns.
Across the recorded series it reached a Democratic high of 36.2 points in 1932 and a Republican high of 74.1 points in 1920. Between 2020 and 2024 the county moved 6.0 points toward the Republican candidate; the 2024 margin was 22.1 points.
A population of 25,204, a 92% non-Hispanic-white share, and a median household income of $86,784 describe the county. The county's voting pattern over the last decade is most similar to that of Winneshiek County and Mitchell 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 →
Bremer County, Iowa. Akashic. https://akashic.app/county/19017/. Accessed May 20, 2026. License: CC BY 4.0.