Akashic
1892–2024
Akashic
Mason City, IA
presidential margin
2008D+21.12012D+13.62016R+9.82020R+9.42024R+14.2
full record · 1892 → 2024
R+14.2
2024
median income$69,633U.S. $80,734 · IA $75,059
median age44.0U.S. 39.1 · IA 38.8
poverty rate10.2%U.S. 12.5% · IA 11.1%
bachelor’s+ (25+)23.3%U.S. 35.6% · IA 31.8%
non-english3.6%U.S. 22.3% · IA 9.2%
race · ethnicity · ancestry
German34.5%
Norwegian14.7%
Irish10.3%
Mexican4.1%
Puerto Rican0.4%
Guatemalan0.2%
African American†1.5%
Chinese0.3%
Asian Indian0.2%
Vietnamese0.2%
religion
other traditions
Latter-day Saints0.7%
Other Christian0.6%
Muslim0.6%
Orthodox0.5%
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.

Mason City, IA, Iowa

Akashic
Mason City, IATrumpR+14.2
—
2024 presidential margin by county for Mason City, IA, IAA map of the constituent counties of Mason City, IA, 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.Cerro Gordo County, IA · R+11.6Worth County, IA · R+28.2
How it voted
Share of the 2024 vote
Donald Trump ✓Republican56.2%15,342
Kamala HarrisDemocratic42.0%11,463
Robert F. Kennedy Jr.We The People1.8%502
D+60
R+60
2 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.
County-level results (2 counties) — table
2024 presidential result by county for Mason City, IA, IA — winner and D-vs-R margin.
CountyWinnerMargin
Cerro Gordo County, IARepublicanR+11.6
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
42.0%Harris11,463
56.2%Trump15,342
1.8%Kennedy502
−14.2%
27,307
R
44.4%Biden12,537
53.8%Trump15,180
1.8%Jorgensen502
−9.4%
28,219
R
41.5%Clinton11,392
51.3%Trump14,074
7.2%Johnson1,976
−9.8%
27,442
D
56.0%Obama15,666
42.4%Romney11,872
1.6%Johnson458
+13.6%
27,996
D
59.8%Obama16,972
38.7%McCain10,987
1.5%Nader438
+21.1%
28,397
D
54.7%Kerry15,658
44.5%Bush12,755
0.8%Other226
+10.1%
28,639
D
55.0%Gore14,393
42.3%Bush11,056
2.7%Nader717
+12.8%
26,166
D
56.4%Clinton14,236
34.5%Dole8,711
9.1%Perot2,292
+21.9%
25,239
D
46.7%Clinton13,424
33.5%Bush9,632
19.8%Perot5,685
+13.2%
28,741
D
58.1%Dukakis15,297
41.2%Bush10,846
0.8%Larouche204
+16.9%
26,347
D
50.8%Mondale13,833
48.5%Reagan13,199
0.7%Larouche184
+2.3%
27,216
R
40.8%Carter11,084
49.5%Reagan13,436
9.6%Anderson2,618
−8.7%
27,138
D
51.0%Carter13,588
47.2%Ford12,568
1.7%McCarthy465
+3.8%
26,621
R
43.7%McGovern11,494
54.8%Nixon14,420
1.6%Schmitz415
−11.1%
26,329
R
41.9%Humphrey10,369
52.7%Nixon13,044
5.3%Wallace1,317
−10.8%
24,730
D
62.4%Johnson16,092
37.5%Goldwater9,661
0.2%Hass41
+24.9%
25,794
R
44.2%Kennedy12,347
55.7%Nixon15,570
0.1%Byrd20
−11.5%
27,937
R
43.8%Stevenson11,827
56.1%Eisenhower15,149
0.1%Andrews32
−12.3%
27,008
R
38.6%Stevenson10,429
61.2%Eisenhower16,522
0.2%Hallinan61
−22.6%
27,012
D
54.5%Truman12,167
43.5%Dewey9,718
1.9%Thurmond434
+11.0%
22,319
D
52.8%Roosevelt11,717
46.9%Dewey10,397
0.3%Thomas70
+6.0%
22,184
D
53.1%Roosevelt13,846
46.7%Willkie12,162
0.2%Thomas59
+6.5%
26,067
D
55.6%Roosevelt12,670
42.0%Landon9,563
2.4%Lemke545
+13.6%
22,778
D
55.3%Roosevelt11,392
43.7%Hoover9,007
1.0%Thomas214
+11.6%
20,613
R
32.9%Smith6,218
66.2%Hoover12,503
0.9%Thomas167
−33.3%
18,888
R
8.1%Davis1,525
56.9%Coolidge10,750
35.0%La Follette6,607
−48.9%
18,882
R
18.8%Cox2,818
78.2%Harding11,694
3.0%Debs448
−59.3%
14,960
R
35.4%Wilson2,855
62.1%Hughes5,019
2.5%Benson202
−26.8%
8,076
O
29.8%Wilson2,144
23.5%Taft1,688
46.7%Roosevelt3,352
Roosevelt +16.8
7,184
R
29.9%Bryan1,969
67.1%Taft4,423
3.1%Debs204
−37.2%
6,596
R
18.5%Parker1,143
77.0%Roosevelt4,767
4.6%Debs283
−58.5%
6,193
R
25.5%Bryan1,795
72.0%McKinley5,075
2.5%Woolley179
−46.5%
7,049
R
29.0%Bryan1,992
69.1%McKinley4,744
1.9%Palmer132
−40.1%
6,868
R
33.2%Cleveland1,823
61.9%Harrison3,406
4.9%Weaver270
−28.8%
5,499
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: −14.2% in 2024.flipped R · 2016−14.2%DR18922024
Presidential margin over time
YearMargin (D minus R)
1892−28.8%
1896−40.1%
1900−46.5%
1904−58.5%
1908−37.2%
1912+6.3%
1916−26.8%
1920−59.3%
1924−48.9%
1928−33.3%
1932+11.6%
1936+13.6%
1940+6.5%
1944+6.0%
1948+11.0%
1952−22.6%
1956−12.3%
1960−11.5%
1964+24.9%
1968−10.8%
1972−11.1%
1976+3.8%
1980−8.7%
1984+2.3%
1988+16.9%
1992+13.2%
1996+21.9%
2000+12.8%
2004+10.1%
2008+21.1%
2012+13.6%
2016−9.8%
2020−9.4%
2024−14.2%
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
Voter registration in Mason City, IARegistered voters by party of registration, 2008–2024. Latest total 37,070 in 2024.9.6K19.3K28.9K38.6K37.1K20082024
DemocraticRepublicanUnaffiliatedOther parties
Voter registration in Mason City, IA
YearTotal registeredDemocraticRepublicanUnaffiliatedOther
200838,20512,81610,03415,3487
201037,89612,15810,21315,50916
201238,57112,05210,46616,03320
201437,96311,46410,29516,15945
201637,81711,12710,86615,73688
201837,25010,60110,48216,021146
202037,45111,34011,17014,707234
202237,09710,62311,74614,490238
202437,0709,83612,65714,273304
Source: Iowa Secretary of State

Mason City anchors a trade-area economy built on manufacturing and agriculture, producing a competitive mix of working-class voters that has swung presidential margins by double digits across recent cycles.

Across the recorded series it reached a Democratic high of 24.9 points in 1964 and a Republican high of 59.3 points in 1920. Between 2020 and 2024 the metro moved 4.8 points toward the Republican candidate; the 2024 margin was 14.2 points.

A population of 49,982, a 89% non-Hispanic-white share, and a median household income of $69,633 describe the metro. The metro's voting pattern over the last decade is most similar to that of Albert Lea, MN and Rice Lake, WI.

Political twins — metros

The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

Albert Lea, MN
93.8twin score
2000–2012 trajectory12-yr trend
Rice Lake, WI
86.4twin score
12-yr trendNorwegian ancestry% White≠ Polish ancestry
Baraboo, WI
85.7twin score
2000–2012 trajectory≠ 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.
Mason City, IA, Iowa. Akashic. https://akashic.app/cbsa/32380/. Accessed May 20, 2026. License: CC BY 4.0.
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Places within Mason City, IA

counties2
Cerro Gordo CountyWorth County

Frequently asked questions

How did Mason City, IA, Iowa vote in 2024?
In 2024, Mason City, IA, Iowa voted Republican by 14.2 points (R+14.2), carried by the Republican candidate. Out of 27,307 votes cast, 11,463 went Democratic and 15,342 went Republican.
When did Mason City, IA, Iowa last vote Democratic?
The most recent presidential election in which Mason City, IA, Iowa voted Democratic was 2012.
How many people live in Mason City, IA, Iowa?
Mason City, IA, Iowa has a population of 49,982 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mason City, IA, Iowa?
Median household income in Mason City, IA, Iowa is $69,633 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Mason City, IA, Iowa?
Akashic tracks 34 presidential elections in Mason City, IA, Iowa from 1892 to 2024. Of those, 15 went Democratic and 18 went Republican.