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Rochestr-Mason City-Austin

Rochestr-Mason City-Austin

Latest: 2024↓ R+2.4 vs 2020

Leans Republican — 385K residents — 12 counties

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Race & ancestry
Group%
▶White (Non-Hispanic)(13)
81.4%
▶Hispanic / Latino(18)
6.6%
▶Black / African American(14)
4.2%
▶Asian(6)
4.0%
▶Middle Eastern / North African(8)
0.4%
▶Native American / Alaska Native(1)
0.3%
▶Native Hawaiian / Pacific Islander(2)
0.1%
Multiracial / Other
3.3%
View full demographics →
Religious adherence
Tradition% Pop% Adherents
Mainline Protestant24.3%44.4%
Catholic14.4%26.3%
Evangelical Protestant13.3%24.3%
Other2.6%4.7%
LDS (Mormon)1.1%2.1%
Orthodox Christian0.2%0.3%
Non-religious45.2%—
View full religion →
Presidential results
YearResult
2024Trump+8.0
2020Trump+5.7
2016Trump+10.0
2012Obama+7.3
2008Obama+10.3
2004Kerry+2.2
2000Gore+2.6
1996Clinton+12.3
1992Clinton+5.0
View full election history →

Rochestr-Mason City-Austin is a media market that has a population of 384,507. In the 2024 presidential election, it voted Republican with a margin of R+8.0. Akashic Edge tracks 40 presidential elections here, dating back to 1868.

Rochestr-Mason City-Austin Presidential Election Results, 1948–2024
YearDem %Rep %MarginSwing
202444.9%52.9%R+8.0R+2.4
202046.1%51.7%R+5.7D+4.4
201640.6%50.6%R+10.0R+17.4
201252.5%45.1%D+7.3R+3.0
200854.1%43.8%D+10.3D+8.1
200450.5%48.3%D+2.2R+0.3
200049.1%46.6%D+2.6R+9.8
199649.8%37.5%D+12.3D+7.3
199240.3%35.2%D+5.0D+3.1
198850.5%48.6%D+1.9D+9.8
198445.7%53.6%R+7.9D+4.1
198039.7%51.6%R+12.0R+9.4
197647.7%50.3%R+2.5D+18.7
197238.5%59.7%R+21.2R+12.9
196843.8%52.1%R+8.3R+29.8
196460.7%39.2%D+21.5D+36.1
196042.6%57.2%R+14.6D+2.6
195641.3%58.5%R+17.2D+11.8
195235.3%64.3%R+29.0R+36.6
194852.9%45.4%D+7.6—
Political Identity

What defines Rochestr-Mason City-Austin?

Rochestr-Mason City-Austin has been won by both parties in the last 6 presidential elections (3D, 3R) — a genuine swing geography.

Constituent Counties

Open in Cartographer
Similarity Explorer

Similar media markets

Nearest neighbors matched on the same place-page feature set used across the dossier system.
8 visible matches
Constituent Geography

Counties in Rochestr-Mason City-Austin

2024 presidential results across the counties that make up this geography.
Sort:
CountyPop.MarginDemRepTotalShare
Olmsted164K
D+10.6
49,12139,46790,92443.6%
Cerro Gordo43K
R+11.6
9,95512,62723,02011.0%
Mower40K
R+10.5
8,31210,29718,9699.1%
Freeborn31K
R+21.3
6,44810,00316,7048.0%
Fillmore21K
R+25.4
4,4917,63812,3855.9%
Dodge21K
R+31.9
4,1088,09512,4846.0%
Floyd15K
R+25.6
2,7824,7447,6503.7%
Hancock11K
R+47.4
1,5234,3365,9392.8%
Winnebago11K
R+30.6
1,9093,6365,6422.7%
Mitchell11K
R+31.1
1,9433,7365,7712.8%
Howard9K
R+31.7
1,6193,1574,8502.3%
Worth7K
R+28.1
1,5082,7154,2872.1%
12 countiesTotal votes: 208,625
Historian Query

Ask the Historian

Explore Rochestr-Mason City-Austin's political evolution with the Historian
Automated Readout

Key Insights

High-confidence patterns distilled from this geography's election history.
  • Split-ticket voting in 2024: Different parties won President and Senate
  • Won by both parties in recent history — Democrats most recently in 2012, Republicans in 2024
  • Highly elastic — margins have ranged 20.3 points across recent elections, suggesting a volatile electorate
Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.
Rochestr-Mason City-AustinCensus ACS 2024Ancestry detail available
Census race profile
Major Census race and ethnicity groups shown as a share of total population.
Expand rows for ancestry detail
White (Non-Hispanic) 81.4%Hispanic 6.6%Black 4.2%Asian 4.0%Multiracial 3.3%
GroupLocalNational
▶White (Non-Hispanic)(13)
81.4%57.4%
▶Hispanic / Latino(18)
6.6%19.3%
▶Black / African American(14)
4.2%12.2%
▶Asian(6)
4.0%6.0%
Multiracial / Other
3.3%4.0%
▶Middle Eastern / North African(8)
0.4%0.9%
▶Native American / Alaska Native(1)
0.3%0.9%
▶Native Hawaiian / Pacific Islander(2)
0.1%0.2%
Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Click rows to expand ancestry detail. Ancestry from ACS B04006, B03001, B02020, B02016. Totals may differ from race — individuals can report multiple ancestries.

Black / African American (estimated remainder) is derived as Black population share minus reported Sub-Saharan African and West Indian ancestry. It is shown as an estimated ancestry detail, not a standalone Census ancestry category.

MENA estimated from ancestry reporting — Census does not have a separate MENA race category. Not shown in bar (overlaps with other race groups).

Religious Adherents

Population that are religious adherents:
54.8%(210.8K people)
U.S. Religion Census 2020
Browse all religions
Tradition% Pop% AdherentsUS PopUS Adherents
Mainline Protestant
24.3%44.4%——
Catholic
14.4%26.3%——
Evangelical Protestant
13.3%24.3%——
Other
2.6%4.7%——
LDS (Mormon)
1.1%2.1%——
Orthodox Christian
0.2%0.3%——
Non-religiousPopulation
45.2%———
Click the chevron to expand denominations. Tradition and denomination rows label both share of total population and share of all religious adherents. Non-religious is shown as a share of total population only.

Who lives in the Rochestr-Mason City-Austin media market? 384,507 residents across 12 counties.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.
Rochestr-Mason City-Austin vs National385K residents
Population & electorate

Scale, voting-age share, and this geography's footprint inside the national electorate.

Total population
Local vs state vs U.S.
385K
local
385KNational 334.9M
Share of U.S. population
Local vs state vs U.S.
0.11%
local
0.11%National 100%
Voting-age population
Local vs state vs U.S.
74.6%
local
74.6%National 75.7%
Economic profile

Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.

Median household income
Local vs state vs U.S.
$82,591
local
$82,591National $83,960
Poverty rate
Local vs state vs U.S.
8.9%
local
8.9%National 12.5%
College degree
Local vs state vs U.S.
34.3%
local
34.3%National 35.6%
Homeownership
Local vs state vs U.S.
74.7%
local
74.7%National 65.2%
Community profile

Age structure, language use, and nativity signals that explain how this geography differs from state and nation.

Median age
Local vs state vs U.S.
40.3 yrs
local
40.3 yrsNational 39.1 yrs
Age 18–29
Local vs state vs U.S.
13.9%
local
13.9%National 15.7%
Age 65+
Local vs state vs U.S.
19.4%
local
19.4%National 17.0%
Foreign born
Local vs state vs U.S.
7.2%
local
7.2%National 14.1%
Non-English at home
Local vs state vs U.S.
10.6%
local
10.6%National 22.2%
English only
Local vs state vs U.S.
89.4%
local
89.4%National 77.8%
Voter Turnout

Turnout in Rochestr-Mason City-Austin

Estimated using 2020 Census voting-age population.
2024 Turnout
72.7%
vs Previous
-0.9pp
Voting-Age Pop
286,836
History
1988–2024
Competitiveness

How competitive is Rochestr-Mason City-Austin?

Lean RAvg margin: R+7.9 (last 3 elections)
2008
D+10.3
2012
D+7.3
2016
R+10.0
2020
R+5.7
2024
R+8.0
Elasticity
20.3pp
margin range
Party Flips
1
last 30 years
5-Elec Avg
R+1.2
Ticket-Splitting

Do voters in Rochestr-Mason City-Austin split their tickets?

Divergence between offices in the same election reveals persuadable voters.
ConsistencyHeavy splitting (7/100)
2024 Office Comparisons
OfficesMargin AMargin BSplit
President vs SenateR+8.0D+10.718.8pp
Average divergence across office pairs: 16.2pp
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