Akashic
1892–2024
Akashic
Rochester-Mason City-Austin
presidential margin
2008D+10.32012D+7.32016R+10.02020R+5.72024R+8.0
full record · 1892 → 2024
R+8.0
2024
median income$82,922U.S. $80,734 · IA $75,059
median age40.3U.S. 39.1
poverty rate8.9%U.S. 12.5%
bachelor’s+ (25+)34.3%U.S. 35.6%
non-english10.6%U.S. 22.3%
race · ethnicity · ancestry
German32.4%
Norwegian15.2%
Irish9.8%
Mexican4.5%
Puerto Rican0.3%
Salvadoran0.2%
African American†2.3%
Somali0.6%
African0.3%
Vietnamese0.6%
Chinese0.6%
Burmese0.5%
religion
other traditions
Latter-day Saints1.2%
Muslim0.7%
Other Christian0.4%
American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents, unaffiliated is the unclaimed remainder.

Rochester-Mason City-Austin, Iowa

Akashic
Rochester-Mason City-AustinTrumpR+8.0
—
2024 presidential margin by county for Rochester-Mason City-Austin, IAA map of the constituent counties of Rochester-Mason City-Austin, IA, each outlined and filled by its 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), seated within the faint outlines of the surrounding states.Mitchell County, IA · R+31.1Dodge County, MN · R+31.9Freeborn County, MN · R+21.3Mower County, MN · R+10.5Floyd County, IA · R+25.6Winnebago County, IA · R+30.6Hancock County, IA · R+47.4Worth County, IA · R+28.2Fillmore County, MN · R+25.4Olmsted County, MN · D+10.6Howard County, IA · R+31.7Cerro Gordo County, IA · R+11.6
How it voted
Share of the 2024 vote
Donald Trump ✓Republican52.9%110,451
Kamala HarrisDemocratic44.9%93,719
Robert F. Kennedy Jr.We The People2.1%4,455
D+60
R+60
12 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.
County-level results (12 counties) — table
2024 presidential result by county for Rochester-Mason City-Austin, IA — winner and D-vs-R margin.
CountyWinnerMargin
Cerro Gordo County, IARepublicanR+11.6
Dodge County, MNRepublicanR+31.9
Fillmore County, MNRepublicanR+25.4
Floyd County, IARepublicanR+25.6
Freeborn County, MNRepublicanR+21.3
Hancock County, IARepublicanR+47.4
Howard County, IARepublicanR+31.7
Mitchell County, IARepublicanR+31.1
Mower County, MNRepublicanR+10.5
Olmsted County, MNDemocraticD+10.6
Winnebago County, IARepublicanR+30.6
Worth County, IARepublicanR+28.2
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
R
44.9%Harris93,719
52.9%Trump110,451
2.1%Kennedy4,455
−8.0%
208,625
R
46.1%Biden97,261
51.7%Trump109,192
2.2%Jorgensen4,596
−5.7%
211,049
R
40.6%Clinton78,374
50.6%Trump97,771
8.8%Johnson17,018
−10.0%
193,163
D
52.5%Obama101,362
45.1%Romney87,179
2.4%Johnson4,566
+7.3%
193,107
D
54.1%Obama104,588
43.8%McCain84,668
2.1%Nader4,123
+10.3%
193,379
D
50.5%Kerry95,891
48.3%Bush91,647
1.2%Other2,331
+2.2%
189,869
D
49.1%Gore81,690
46.6%Bush77,423
4.3%Nader7,193
+2.6%
166,306
D
49.8%Clinton77,675
37.5%Dole58,433
12.7%Perot19,715
+12.3%
155,823
D
40.3%Clinton69,215
35.2%Bush60,592
24.5%Perot42,092
+5.0%
171,899
D
50.5%Dukakis77,700
48.6%Bush74,744
0.8%Larouche1,301
+1.9%
153,745
R
45.7%Mondale73,169
53.6%Reagan85,746
0.7%Larouche1,106
−7.9%
160,021
R
39.7%Carter62,539
51.6%Reagan81,405
8.7%Anderson13,756
−12.0%
157,700
R
47.7%Carter74,732
50.3%Ford78,719
2.0%McCarthy3,066
−2.5%
156,517
R
38.5%McGovern56,735
59.7%Nixon87,979
1.7%Schmitz2,574
−21.2%
147,288
R
43.8%Humphrey61,622
52.1%Nixon73,261
4.1%Wallace5,790
−8.3%
140,673
D
60.7%Johnson85,925
39.2%Goldwater55,474
0.2%Hass242
+21.5%
141,641
R
42.6%Kennedy62,809
57.2%Nixon84,264
0.1%Byrd208
−14.6%
147,281
R
41.3%Stevenson55,396
58.5%Eisenhower78,418
0.2%Andrews253
−17.2%
134,067
R
35.3%Stevenson48,187
64.3%Eisenhower87,784
0.3%Hallinan474
−29.0%
136,445
D
52.9%Truman61,213
45.4%Dewey52,460
1.7%Thurmond1,987
+7.6%
115,660
R
47.2%Roosevelt52,049
52.5%Dewey57,846
0.4%Thomas391
−5.3%
110,286
R
47.6%Roosevelt60,784
52.1%Willkie66,636
0.3%Thomas408
−4.6%
127,828
D
55.6%Roosevelt63,586
40.8%Landon46,623
3.6%Lemke4,110
+14.8%
114,319
D
56.3%Roosevelt58,614
42.0%Hoover43,708
1.7%Thomas1,773
+14.3%
104,095
R
32.3%Smith31,499
66.9%Hoover65,233
0.8%Thomas777
−34.6%
97,509
R
8.1%Davis7,409
57.6%Coolidge52,460
34.3%La Follette31,279
−49.4%
91,148
R
16.1%Cox12,798
80.8%Harding64,393
3.2%Debs2,541
−64.7%
79,732
R
35.7%Wilson15,248
60.7%Hughes25,918
3.6%Benson1,525
−25.0%
42,691
O
30.1%Wilson12,169
24.7%Taft9,988
45.2%Roosevelt18,255
Roosevelt +15.1
40,412
R
30.6%Bryan12,379
64.5%Taft26,086
4.9%Debs1,972
−33.9%
40,437
R
19.3%Parker7,351
75.8%Roosevelt28,813
4.9%Debs1,857
−56.4%
38,021
R
27.7%Bryan12,346
69.0%McKinley30,730
3.3%Woolley1,468
−41.3%
44,544
R
31.1%Bryan14,889
66.6%McKinley31,882
2.3%Palmer1,093
−35.5%
47,864
R
33.4%Cleveland12,608
57.3%Harrison21,646
9.3%Weaver3,513
−23.9%
37,767
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 1892 to 2024. Most recent: −8.0% in 2024.flipped R · 2016−8.0%DR18922024
Presidential margin over time
YearMargin (D minus R)
1892−23.9%
1896−35.5%
1900−41.3%
1904−56.4%
1908−33.9%
1912+5.4%
1916−25.0%
1920−64.7%
1924−49.4%
1928−34.6%
1932+14.3%
1936+14.8%
1940−4.6%
1944−5.3%
1948+7.6%
1952−29.0%
1956−17.2%
1960−14.6%
1964+21.5%
1968−8.3%
1972−21.2%
1976−2.5%
1980−12.0%
1984−7.9%
1988+1.9%
1992+5.0%
1996+12.3%
2000+2.6%
2004+2.2%
2008+10.3%
2012+7.3%
2016−10.0%
2020−5.7%
2024−8.0%
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
Voter registration in Rochester-Mason City-AustinRegistered voters by party of registration, 2008–2014. Latest total 78,636 in 2014.20K39.9K59.9K79.9K78.6K20082014
DemocraticRepublicanUnaffiliatedOther parties

† Some years predate full county coverage; a flagged year sums only the counties reporting it.

Voter registration in Rochester-Mason City-Austin
YearTotal registeredDemocraticRepublicanUnaffiliatedOther
2008 (partial)79,86524,68023,13032,04213
2010 (partial)79,47123,60523,61132,22332
2012 (partial)79,57422,74224,05932,73439
2014 (partial)78,63621,82823,51433,20886
Source: State election authorities

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.
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Places within Rochester-Mason City-Austin

counties12
Cerro Gordo CountyDodge CountyFillmore CountyFloyd CountyFreeborn CountyHancock CountyHoward CountyMitchell CountyMower CountyOlmsted CountyWinnebago CountyWorth County

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.