Sioux City, Iowa: Florida Surge market. In 2024, voted R+45%. Republican peak: R+46 in 1920.
Key facts
- 2024 presidential margin
- R+45MIT Election Lab
- Political typology
- Florida SurgeAkashic typology
- Population
- 418,2002024 5-year
- Median household income
- $73,4382024 5-year
- White (non-Hispanic)
- 79.4%2024 5-year
- Black
- 2.4%2024 5-year
- Hispanic / Latino
- 13.7%2024 5-year
- Peak Democratic margin
- D+33 in 1932MIT Election Lab
- Peak Republican margin
- R+46 in 1920MIT Election Lab
2024 presidential election
Sioux City
TrumpR+45
How it voted
Share of the 2024 vote
| Donald Trump ✓Republican | 71.9% | 141,399 |
|---|---|---|
| Kamala HarrisDemocratic | 26.5% | 52,044 |
| OtherAll other candidates | 1.6% | 3,190 |
D+60R+60
23 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | −2.7% |
| 1896 | −7.5% |
| 1900 | −18.3% |
| 1904 | −40.1% |
| 1908 | −14.2% |
| 1912 | +15.3% |
| 1916 | +1.1% |
| 1920 | −46.3% |
| 1924 | −32.2% |
| 1928 | −17.7% |
| 1932 | +32.9% |
| 1936 | +21.5% |
| 1940 | −8.6% |
| 1944 | −9.9% |
| 1948 | +2.6% |
| 1952 | −38.1% |
| 1956 | −23.5% |
| 1960 | −22.3% |
| 1964 | +10.4% |
| 1968 | −25.9% |
| 1972 | −28.4% |
| 1976 | −14.4% |
| 1980 | −30.8% |
| 1984 | −25.6% |
| 1988 | −10.1% |
| 1992 | −13.2% |
| 1996 | −11.1% |
| 2000 | −22.0% |
| 2004 | −24.8% |
| 2008 | −17.8% |
| 2012 | −24.1% |
| 2016 | −41.3% |
| 2020 | −39.8% |
| 2024 | −45.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 52,044 | 141,399 | 196,633 | ||
| R | 59,142 | 140,017 | 203,037 | ||
| R | 50,266 | 129,622 | 192,327 | ||
| R | 70,379 | 116,144 | 189,992 | ||
| R | 76,085 | 109,622 | 188,463 | ||
| R | 70,875 | 118,193 | 190,783 | ||
| R | 63,337 | 100,685 | 169,996 | ||
| R | 64,199 | 82,702 | 166,080 | ||
| R | 59,837 | 83,917 | 182,881 | ||
| R | 75,320 | 92,427 | 168,927 | ||
| R | 66,271 | 112,322 | 180,086 | ||
| R | 56,444 | 113,387 | 184,810 | ||
| R | 75,440 | 101,296 | 180,001 | ||
| R | 61,980 | 112,019 | 176,090 | ||
| R | 59,672 | 104,737 | 173,740 | ||
| D | 101,675 | 82,490 | 184,375 | ||
| R | 78,191 | 123,086 | 201,323 | ||
| R | 74,786 | 120,889 | 195,915 | ||
| R | 62,215 | 139,261 | 202,033 | ||
| D | 84,912 | 80,527 | 167,525 | ||
| R | 76,680 | 93,515 | 170,641 | ||
| R | 93,625 | 111,359 | 205,362 | ||
| D | 114,961 | 73,007 | 195,524 | ||
| D | 118,824 | 59,253 | 180,840 | ||
| R | 68,327 | 97,912 | 167,070 | ||
| R | 26,458 | 77,040 | 157,057 | ||
| R | 35,486 | 99,073 | 137,395 | ||
| D | 41,444 | 40,540 | 83,545 | ||
| O | 28,696 | 16,666 | 78,471 | ||
| R | 32,279 | 43,299 | 77,583 | ||
| R | 19,683 | 48,944 | 72,890 | ||
| R | 31,704 | 46,353 | 79,931 | ||
| R | 34,421 | 40,145 | 75,854 | ||
| R | 23,568 | 25,176 | 59,658 | ||
| — | — | — | — | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
32.7%
Irish
10.1%
English
6.2%
American
5.6%
French
1.4%
Italian
1.0%
Polish
0.9%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 38.5 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$73,438
Sioux City ranks near the middle of US counties.
Sioux City$73,438
Iowa$75,059
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
10.9%
Child poverty is below the national average.
Children under 1813.1%
Working age (18–64)9.9%
Seniors (65+)11.6%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
86.9%
speak English only
Spanish9.9%
Asian & Pacific Islander1.4%
Other languages0.9%
Other Indo-European0.8%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 42.1% of residents not counted as adherents by any reporting body.
The Sioux City designated market area stretches across Iowa, Nebraska, South Dakota, and Minnesota, concentrating ad buys for campaigns targeting rural and small-city voters across a patchwork of closely contested congressional districts.
Across the recorded series it reached a Democratic high of thirty-three points in 1932 and a Republican high of forty-six points in 1920. Between 2020 and 2024 the market moved six points toward the Republican candidate; the 2024 margin was forty-five points.
A population of 418,200, a 79% non-Hispanic-white share, and a median household income of $73,438 describe the market.
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.
Sioux City, Iowa. Akashic. https://akashic.app/dma/624/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Sioux City, Iowa vote in 2024?
In 2024, Sioux City, Iowa voted Republican by 45.4 points (R+45), carried by the Republican candidate. Out of 196,633 votes cast, 52,044 went Democratic and 141,399 went Republican.
What is Sioux City, Iowa's political typology?
Akashic places Sioux City, Iowa in the "Florida Surge" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the market has voted Democratic 5 times, Republican 28 times, and other 1 times.
When did Sioux City, Iowa last vote Democratic?
The most recent presidential election in which Sioux City, Iowa voted Democratic was 1964.
How many people live in Sioux City, Iowa?
Sioux City, Iowa has a population of 418,200 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Sioux City, Iowa?
Median household income in Sioux City, Iowa is $73,438 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Sioux City, Iowa?
Akashic tracks 38 presidential elections in Sioux City, Iowa from 1876 to 2024. Of those, 5 went Democratic and 28 went Republican. The market's typology — "Florida Surge" — captures where that record, its demographics, and its recent swing place it among American communities.