HarrisDemocratic44.9%93,719TrumpRepublican52.9%110,451OtherAll other candidates2.1%4,455
R+8.0- Lead
- 16,732
- Total
- 208,625
- vs nation
- R+6.5
Akashicmedia market
Rochester-Mason City-Austin
Office (updates table and map)
President margin by year
Place winner margin
12 counties by 2024 margin · County returns · MIT Election Lab
President results by year
Vote totals, margins, and source status
BidenDemocratic46.1%97,261TrumpRepublican51.7%109,192OtherAll other candidates2.2%4,596
R+5.7- Lead
- 11,931
- Total
- 211,049
- vs nation
- R+10.1
ClintonDemocratic40.6%78,374TrumpRepublican50.6%97,771OtherAll other candidates8.8%17,018
R+10.0- Lead
- 19,397
- Total
- 193,163
- vs nation
- R+12.1
ObamaDemocratic52.5%101,362RomneyRepublican45.1%87,179OtherAll other candidates2.4%4,566
D+7.3- Lead
- 14,183
- Total
- 193,107
- vs nation
- D+3.5
ObamaDemocratic54.1%104,588McCainRepublican43.8%84,668OtherAll other candidates2.1%4,123
D+10.3- Lead
- 19,920
- Total
- 193,379
- vs nation
- D+3.0
KerryDemocratic50.5%95,891BushRepublican48.3%91,647OtherAll other candidates1.2%2,331
D+2.2- Lead
- 4,244
- Total
- 189,869
- vs nation
- D+4.7
GoreDemocratic49.1%81,690BushRepublican46.6%77,423OtherAll other candidates4.3%7,193
D+2.6- Lead
- 4,267
- Total
- 166,306
- vs nation
- D+2.0
ClintonDemocratic49.8%77,675DoleRepublican37.5%58,433OtherAll other candidates12.7%19,715
D+12.3- Lead
- 19,242
- Total
- 155,823
- vs nation
- D+3.8
Key facts
- 2024 presidential margin
- R+8.0MIT Election Lab
- Population
- 384,5072024 5-year
- Population density
- 57 / sq mi2024 5-year · TIGER/Line
- Land area
- 6,756 sq miTIGER/Line
- Median household income
- $82,9222024 5-year
- White (non-Hispanic)
- 81.4%2024 5-year
- Black
- 4.1%2024 5-year
- Hispanic / Latino
- 6.6%2024 5-year
- Peak Democratic margin
- D+21.5 in 1964MIT Election Lab
- Peak Republican margin
- R+64.7 in 1920MIT Election Lab
- Most similar
- La Crosse-Eau Claire, WI · twin score 87.4
presidential history
Party record book
Rochester-Mason City-Austin · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
60.7%
85,925 votes · D+21.5
Runner-up · Franklin D. Roosevelt, 1932 · 56.3%
Republican
Warren G. Harding1920
80.8%
64,393 votes · R+64.7
Runner-up · Theodore Roosevelt, 1904 · 75.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
104,588votes
54.1% of the vote · D+10.3
Runner-up · Barack Obama, 2012 · 101,362 votes
Republican
Donald Trump2024
110,451votes
52.9% of the vote · R+8.0
Runner-up · Donald Trump, 2020 · 109,192 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Walter Mondale1984
+10.4pts D vs U.S.
Place R+7.9 · U.S. R+18.2
Runner-up · Michael Dukakis, 1988 · +9.6 pts
Republican
Warren G. Harding1920
+38.5pts R vs U.S.
Place R+64.7 · U.S. R+26.2
Runner-up · Theodore Roosevelt, 1904 · +36.8 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
On a multi-state Place, each row sums votes cast in the separate U.S. House races held inside the Place that year. It is a geographic vote total, not one contest or a seat tally.
voter registration
Registered voters
By party of registration, over time
Party registration · 2014R+2.1
Presidential vote · 2024R+8.0
Registration leans Republican; the presidential vote runs 5.9 points more Republican than the rolls.
DemocraticRepublicanUnaffiliatedOther parties
† Some years predate full county coverage; a flagged year sums only the counties reporting it.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2008 (partial) | 79,865 | 24,680 | 23,130 | 32,042 | 13 |
| 2010 (partial) | 79,471 | 23,605 | 23,611 | 32,223 | 32 |
| 2012 (partial) | 79,574 | 22,742 | 24,059 | 32,734 | 39 |
| 2014 (partial) | 78,636 | 21,828 | 23,514 | 33,208 | 86 |
domestic migration
Who moves in and out
Net domestic migration over time
−37 net domestic migration · 2025
20112025
Net −12,038 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | −1,341 |
| 2012 | −1,323 |
| 2013 | −754 |
| 2014 | −1,466 |
| 2015 | −1,643 |
| 2016 | −231 |
| 2017 | −330 |
| 2018 | −226 |
| 2019 | −497 |
| 2021 | −708 |
| 2022 | −1,659 |
| 2023 | −1,001 |
| 2024 | −822 |
| 2025 | −37 |
This mid-sized media market spans the Minnesota-Iowa border region, where farm-economy concerns and small-city demographics consistently produce competitive margins in statewide races on both sides of the line.
Across the recorded series it reached a Democratic high of 21.5 points in 1964 and a Republican high of 64.7 points in 1920. Between 2020 and 2024 the market moved 2.4 points toward the Republican candidate; the 2024 margin was 8.0 points.
A population of 384,507, a 81% non-Hispanic-white share, and a median household income of $82,922 describe the market. The market's voting pattern over the last decade is most similar to that of La Crosse-Eau Claire and Mankato.
Political twins — media markets
The media markets whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
La Crosse-Eau Claire
Wisconsin
87.4twin score
Norwegian ancestry2000–2012 trajectory≠ Polish ancestry
Mankato
Minnesota
79.2twin score
Norwegian ancestry% WhiteScottish ancestry≠ median age
Cedar Rapids-Waterloo-Iowa City & Dubuque
Iowa
75.8twin score
2000–2012 trajectory12-yr trend≠ 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.
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Rochester-Mason City-Austin, Iowa. Akashic. https://akashic.app/dma/611/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
U.S. electionsAll elections →
Places within Rochester-Mason City-Austin
Frequently asked questions
How did Rochester-Mason City-Austin, Iowa vote in 2024?
In 2024, Rochester-Mason City-Austin, Iowa voted Republican by 8.0 points (R+8.0), carried by the Republican candidate. Out of 208,625 votes cast, 93,719 went Democratic and 110,451 went Republican.
When did Rochester-Mason City-Austin, Iowa last vote Democratic?
The most recent presidential election in which Rochester-Mason City-Austin, Iowa voted Democratic was 2012.
How many people live in Rochester-Mason City-Austin, Iowa?
Rochester-Mason City-Austin, Iowa has a population of 384,507 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Rochester-Mason City-Austin, Iowa?
Median household income in Rochester-Mason City-Austin, Iowa is $82,922 — above the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Rochester-Mason City-Austin, Iowa?
Akashic tracks 34 presidential elections in Rochester-Mason City-Austin, Iowa from 1892 to 2024. Of those, 11 went Democratic and 22 went Republican.