Mason City, IA
Latest: 2024
Leans Republican — shifted 4.8pp toward Republicans in 2024 — 50K residents — 2 counties
Race & ancestry
| Group | % |
|---|---|
▶White (Non-Hispanic)(13) | 89.0% |
▶Hispanic / Latino(10) | 5.3% |
▶Black / African American(5) | 2.1% |
▶Asian(6) | 1.1% |
▶Middle Eastern / North African(2) | 0.1% |
▶Native American / Alaska Native(1) | 0.2% |
Native Hawaiian / Pacific Islander | 0.5% |
Multiracial / Other | 1.8% |
Religious adherence
| Tradition | % Pop | % Adherents |
|---|---|---|
| Mainline Protestant | 27.4% | 47.4% |
| Evangelical Protestant | 15.6% | 27.0% |
| Catholic | 12.3% | 21.3% |
| Other | 2.0% | 3.4% |
| LDS (Mormon) | 0.7% | 1.2% |
| Orthodox Christian | 0.6% | 1.0% |
| Non-religious | 42.2% | — |
Presidential results
| Year | Result |
|---|---|
| 2024 | Trump+14.2 |
| 2020 | Trump+9.4 |
| 2016 | Trump+9.8 |
| 2012 | Obama+13.6 |
| 2008 | Obama+21.1 |
| 2004 | Kerry+10.1 |
| 2000 | Gore+12.8 |
| 1996 | Clinton+21.9 |
| 1992 | Clinton+13.2 |
Mason City, IA is a metro area that has a population of 49,982. In the 2024 presidential election, it voted Republican with a margin of R+14.2. Akashic Edge tracks 40 presidential elections here, dating back to 1868.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 42.0% | 56.2% | R+14.2 | R+4.8 |
| 2020 | 44.4% | 53.8% | R+9.4 | D+0.4 |
| 2016 | 41.5% | 51.3% | R+9.8 | R+23.3 |
| 2012 | 56.0% | 42.4% | D+13.6 | R+7.5 |
| 2008 | 59.8% | 38.7% | D+21.1 | D+10.9 |
| 2004 | 54.7% | 44.5% | D+10.1 | R+2.6 |
| 2000 | 55.0% | 42.3% | D+12.8 | R+9.1 |
| 1996 | 56.4% | 34.5% | D+21.9 | D+8.7 |
| 1992 | 46.7% | 33.5% | D+13.2 | R+3.7 |
| 1988 | 58.1% | 41.2% | D+16.9 | D+14.6 |
| 1984 | 50.8% | 48.5% | D+2.3 | D+11.0 |
| 1980 | 40.8% | 49.5% | R+8.7 | R+12.5 |
| 1976 | 51.0% | 47.2% | D+3.8 | D+14.9 |
| 1972 | 43.7% | 54.8% | R+11.1 | R+0.3 |
| 1968 | 41.9% | 52.7% | R+10.8 | R+35.7 |
| 1964 | 62.4% | 37.5% | D+24.9 | D+36.5 |
| 1960 | 44.2% | 55.7% | R+11.5 | D+0.8 |
| 1956 | 43.8% | 56.1% | R+12.3 | D+10.3 |
| 1952 | 38.6% | 61.2% | R+22.6 | R+33.5 |
| 1948 | 54.5% | 43.5% | D+11.0 | — |
What defines Mason City, IA?
Mason City, IA has been won by both parties in the last 6 presidential elections (3D, 3R) — a genuine swing geography.
Constituent Counties
Similar metro areas
Nearest neighbors matched on the same place-page feature set used across the dossier system.
Sandusky, OH
Small-town rural republican
Grand Rapids, MN
Small-town rural republican
Rice Lake, WI
Small-town rural republican
Bay City, MI
Small-town rural republican 2
Auburn, NY
Small-town rural republican 2
Ludington, MI
Small-town rural republican
Wisconsin Rapids-Marshfield, WI
Small-town rural republican 2
Albert Lea, MN
Small-town rural republican 2
Counties in Mason City, IA
2024 presidential results across the counties that make up this geography.
Sort:
| County | Pop. | Margin | Dem | Rep | Total | Share |
|---|---|---|---|---|---|---|
| Cerro Gordo | 43K | R+11.6 | 9,955 | 12,627 | 23,020 | 84.3% |
| Worth | 7K | R+28.1 | 1,508 | 2,715 | 4,287 | 15.7% |
2 countiesTotal votes: 27,307
Ask the Historian
Explore Mason City, IA's political evolution with the Historian
Key Insights
High-confidence patterns distilled from this geography's election history.
- Won by both parties in recent history — Democrats most recently in 2012, Republicans in 2024
- Highly elastic — margins have ranged 35.3 points across recent elections, suggesting a volatile electorate
- College attainment is 23% — 10pp below the national average. Similar education levels correlate with Republican lean nationally
Who Lives Here
A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.
Census race profile
Major Census race and ethnicity groups shown as a share of total population.
| Group | Mason City, IA | National |
|---|---|---|
▶White (Non-Hispanic)(13) | 89.0% | 57.4% |
▶Hispanic / Latino(10) | 5.3% | 19.3% |
▶Black / African American(5) | 2.1% | 12.2% |
Multiracial / Other | 1.8% | 4.0% |
▶Asian(6) | 1.1% | 6.0% |
Native Hawaiian / Pacific Islander | 0.5% | 0.2% |
▶Native American / Alaska Native(1) | 0.2% | 0.9% |
▶Middle Eastern / North African(2) | 0.1% | 0.9% |
Method notes
Religious Adherents
Population that are religious adherents:
57.8%
Catholic-Evangelical edge: -10.2pp (vs national 4.5pp). A strongly Evangelical-leaning religious profile, which nationally correlates with Republican-leaning rural and exurban communities.
| Tradition | % Pop | % Adherents | US Pop | US Adherents |
|---|---|---|---|---|
| 27.4% | 47.4% | — | — | |
| 15.6% | 27.0% | — | — | |
| 12.3% | 21.3% | — | — | |
| 2.0% | 3.4% | — | — | |
LDS (Mormon) | 0.7% | 1.2% | — | — |
| 0.6% | 1.0% | — | — | |
Non-religiousPopulation | 42.2% | — | — | — |
Who lives in the Mason City, IA metro area? 49,982 residents across 2 counties.
Demographics
Read this geography's profile in three layers: local, state (where available), and national baseline.
23% of adults hold a bachelor's degree — 10pp below the national average. Places with similar education levels vote R+9 on average nationally.
Population & electorate
Scale, voting-age share, and this geography's footprint inside the national electorate.
Total population
50K
Share of U.S. population
0.01%
Voting-age population
77.0%
Economic profile
Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.
Median household income
$69,563
Poverty rate
10.2%
College degree
23.3%
Homeownership
72.2%
Community profile
Age structure, language use, and nativity signals that explain how this geography differs from state and nation.
Median age
44.0 yrs
Age 18–29
13.0%
Age 65+
23.4%
Foreign born
2.3%
Non-English at home
3.6%
English only
96.4%
Turnout in Mason City, IA
Estimated using 2020 Census voting-age population.
71.0%
-2.4pp
38,463
1988–2024
How competitive is Mason City, IA?
Likely RAvg margin: R+11.1 (last 3 elections)
2008
D+21.1
2012
D+13.6
2016
R+9.8
2020
R+9.4
2024
R+14.2
35.3pp
1
D+0.3
Do voters in Mason City, IA split their tickets?
Divergence between offices in the same election reveals persuadable voters.
Heavy splitting (0/100)
| Offices | Margin A | Margin B | Split |
|---|---|---|---|
| Senate vs Governor | R+12.2 | R+17.7 | 5.4pp |
Average divergence across office pairs: 19.5pp
Located In
Mason City, IA sits inside these higher-level geographies.
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