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Sioux City, IA-NE-SD

Sioux City, IA-NE-SD

Latest: 2024↓ R+7.6 vs 2020

Safe Republican — shifted 7.6pp toward Republicans in 2024 — 145K residents — 3 counties

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Race & ancestry
Group%
▶White (Non-Hispanic)(13)
65.9%
▶Hispanic / Latino(14)
20.7%
▶Black / African American(8)
5.0%
▶Asian(6)
2.3%
▶Middle Eastern / North African(6)
0.6%
▶Native American / Alaska Native(3)
1.9%
▶Native Hawaiian / Pacific Islander(3)
0.5%
Multiracial / Other
3.5%
View full demographics →
Religious adherence
Tradition% Pop% Adherents
Catholic21.0%46.0%
Mainline Protestant10.7%23.4%
Evangelical Protestant9.9%21.7%
Other2.8%6.1%
LDS (Mormon)0.8%1.6%
Black Protestant0.7%1.6%
Orthodox Christian0.5%1.2%
Non-religious54.4%—
View full religion →
Presidential results
YearResult
2024Trump+26.3
2020Trump+18.7
2016Trump+22.1
2012Romney+2.8
2008McCain+2.7
2004Bush+4.3
2000Bush+5.0
1996Clinton+2.1
1992Bush+1.4
View full election history →

Sioux City, IA-NE-SD is a metro area that has a population of 144,682. In the 2024 presidential election, it voted Republican with a margin of R+26.3. Akashic Edge tracks 40 presidential elections here, dating back to 1868.

Sioux City, IA-NE-SD Presidential Election Results, 1948–2024
YearDem %Rep %MarginSwing
202435.9%62.3%R+26.3R+7.6
202039.6%58.3%R+18.7D+3.3
201635.6%57.6%R+22.1R+19.3
201247.7%50.4%R+2.8R+0.1
200847.9%50.6%R+2.7D+1.6
200447.5%51.8%R+4.3D+0.7
200045.7%50.8%R+5.0R+7.2
199645.7%43.6%D+2.1D+3.6
199240.3%41.8%R+1.4R+6.0
198852.0%47.4%D+4.6D+14.4
198444.7%54.5%R+9.8D+8.4
198036.6%54.8%R+18.2R+12.1
197646.1%52.3%R+6.2D+8.8
197241.8%56.8%R+15.0R+7.2
196843.3%51.0%R+7.8R+29.0
196460.6%39.3%D+21.3D+31.3
196045.0%55.0%R+10.0D+0.8
195644.5%55.4%R+10.9D+7.6
195240.6%59.1%R+18.4R+32.0
194856.4%42.8%D+13.6—
Political Identity

What defines Sioux City, IA-NE-SD?

Sioux City, IA-NE-SD voted overwhelmingly Republican in 2024. Akashic Edge tracks 40 presidential elections here, revealing how its political character has evolved over more than a century.

Constituent Counties

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Similarity Explorer

Similar metro areas

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

Counties in Sioux City, IA-NE-SD

2024 presidential results across the counties that make up this geography.
Sort:
CountyPop.MarginDemRepTotalShare
Woodbury106K
R+22.9
16,14525,96942,92174.1%
Dakota21K
R+29.8
2,1093,9346,12010.6%
Union17K
R+40.7
2,5486,1608,87615.3%
3 countiesTotal votes: 57,917
Historian Query

Ask the Historian

Explore Sioux City, IA-NE-SD's political evolution with the Historian
Automated Readout

Key Insights

High-confidence patterns distilled from this geography's election history.
  • Has voted Republican in the last 5 presidential elections
  • Latest election (2024) was a Republican landslide with a 26.3% margin
  • Highly elastic — margins have ranged 23.6 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.
Sioux City, IA-NE-SDCensus 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) 65.9%Hispanic 20.7%Black 5.0%Multiracial 3.5%Asian 2.3%Native American 1.9%Native Hawaiian 0.5%
GroupSioux City, IA-NE-SDNational
▶White (Non-Hispanic)(13)
65.9%57.4%
▶Hispanic / Latino(14)
20.7%19.3%
▶Black / African American(8)
5.0%12.2%
Multiracial / Other
3.5%4.0%
▶Asian(6)
2.3%6.0%
▶Native American / Alaska Native(3)
1.9%0.9%
▶Middle Eastern / North African(6)
0.6%0.9%
▶Native Hawaiian / Pacific Islander(3)
0.5%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:
45.6%(66.0K people)
U.S. Religion Census 2020
Browse all religions

Catholic-Evangelical edge: +19.8pp (vs national 4.5pp). A strongly Catholic-leaning religious profile, which nationally correlates with Democratic-leaning urban and suburban communities.

Tradition% Pop% AdherentsUS PopUS Adherents
Catholic
21.0%46.0%——
Mainline Protestant
10.7%23.4%——
Evangelical Protestant
9.9%21.7%——
Other
2.8%6.1%——
LDS (Mormon)
0.8%1.6%——
Black Protestant
0.7%1.6%——
Orthodox Christian
0.5%1.2%——
Non-religiousPopulation
54.4%———
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 Sioux City, IA-NE-SD metro area? 144,682 residents across 3 counties.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.
Sioux City, IA-NE-SD vs National145K residents

24% of adults hold a bachelor's degree — 9pp 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
Local vs state vs U.S.
145K
local
145KNational 334.9M
Share of U.S. population
Local vs state vs U.S.
0.04%
local
0.04%National 100%
Voting-age population
Local vs state vs U.S.
71.7%
local
71.7%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.
$75,316
local
$75,316National $83,960
Poverty rate
Local vs state vs U.S.
12.7%
local
12.7%National 12.5%
College degree
Local vs state vs U.S.
24.4%
local
24.4%National 35.6%
Homeownership
Local vs state vs U.S.
68.3%
local
68.3%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.
36.2 yrs
local
36.2 yrsNational 39.1 yrs
Age 18–29
Local vs state vs U.S.
16.0%
local
16.0%National 15.7%
Age 65+
Local vs state vs U.S.
15.9%
local
15.9%National 17.0%
Foreign born
Local vs state vs U.S.
11.8%
local
11.8%National 14.1%
Non-English at home
Local vs state vs U.S.
19.9%
local
19.9%National 22.2%
English only
Local vs state vs U.S.
80.1%
local
80.1%National 77.8%
Voter Turnout

Turnout in Sioux City, IA-NE-SD

Estimated using 2020 Census voting-age population.
2024 Turnout
55.8%
vs Previous
-3.0pp
Voting-Age Pop
103,791
History
1988–2024
Competitiveness

How competitive is Sioux City, IA-NE-SD?

Safe RAvg margin: R+22.4 (last 3 elections)
2008
R+2.7
2012
R+2.8
2016
R+22.1
2020
R+18.7
2024
R+26.3
Elasticity
23.6pp
margin range
Party Flips
1
last 30 years
5-Elec Avg
R+14.5
Ticket-Splitting

Do voters in Sioux City, IA-NE-SD split their tickets?

Divergence between offices in the same election reveals persuadable voters.
ConsistencyHeavy splitting (6/100)
2024 Office Comparisons
OfficesMargin AMargin BSplit
President vs SenateR+26.3R+34.58.1pp
Average divergence across office pairs: 16.3pp
Containing Geography

Located In

Sioux City, IA-NE-SD sits inside these higher-level geographies.
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