Sioux City, Iowa: Populist market. In 2024, voted R+45%. Republican peak: R+46 in 1920.
Key facts
- 2024 presidential margin
- R+45MIT Election Lab
- Political archetype
- PopulistAkashic 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
Constituent county margins for Sioux City, IAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
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
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.
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.
Median household income
2024 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.
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.
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.
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.
The Democratic margin in Sioux City peaked at thirty-three points in 1932. By 1968 the market had flipped, voting Republican for the first time in many years. The 2024 margin was forty-five points, the most Republican-leaning result in the market's modern history.
The economic context is the key. The median household income of $73,438 sits well below state and national norms, and 11% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Sioux City, Iowa — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.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 archetype?
Akashic classifies Sioux City, Iowa as a "Populist" market based on its long-arc presidential voting pattern. 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 archetype — "Populist" — captures the overall trajectory of that voting record.