akashic
1876–2024
Congressional District 4·Iowa

Iowa 4th Congressional District moved 5 points toward the Republican candidate between 2020 and 2024.

Iowa's vast northwestern district, among the nation's most Republican-leaning

2008 — 2024·5 elections
IA
LatestR+31in 2024
TypologySunbelt Conservativecluster typology
Population798,0352024 ACS

Iowa 4th Congressional District: Sunbelt Conservative district. In 2024, voted R+31%. Republican peak: R+31 in 2024.

Key facts

2024 presidential margin
R+31MIT Election Lab
Political typology
Sunbelt ConservativeAkashic typology
Population
798,0352024 5-year
Median household income
$72,9242024 5-year
White (non-Hispanic)
84.0%2024 5-year
Black
2.0%2024 5-year
Hispanic / Latino
10.4%2024 5-year
Peak Republican margin
R+31 in 2024MIT Election Lab
DW-NOMINATE
Member ideology
R
FEENSTRA, RandyCongress 119 · Republican
DW-NOMINATE first-dimension (economic) score0.47 sits at approximately the 73rd percentile.00.47−1 liberal+1 conservative
FEENSTRA scores 0.47 on the first NOMINATE dimension (−1 most liberal, +1 most conservative).

Predecessors: KING, Steve (2019–2021), KING, Steve (2017–2019), KING, Steve (2015–2017), KING, Steve (2013–2015)

Source · Voteview / Lewis, Poole, Rosenthal et al. (CC-BY).
2024 presidential election
Congressional District 4
TrumpR+31
—
2024 presidential margin by county for Congressional District 4, IAA map of the constituent counties of Congressional District 4, IA, each outlined and filled by its 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic).Mills County, IA · R+39Fremont County, IA · R+44Plymouth County, IA · R+54Calhoun County, IA · R+47Palo Alto County, IA · R+45Emmet County, IA · R+44Clay County, IA · R+43Hamilton County, IA · R+33Dickinson County, IA · R+40Hancock County, IA · R+47Winnebago County, IA · R+31Sioux County, IA · R+71Pocahontas County, IA · R+54Cherokee County, IA · R+46Sac County, IA · R+51Osceola County, IA · R+64Franklin County, IA · R+42Kossuth County, IA · R+44Humboldt County, IA · R+50Buena Vista County, IA · R+33Ida County, IA · R+53O'Brien County, IA · R+61Wright County, IA · R+36Lyon County, IA · R+70Monona County, IA · R+45Harrison County, IA · R+42Shelby County, IA · R+43Crawford County, IA · R+43Marshall County, IA · R+16Audubon County, IA · R+38Boone County, IA · R+21Story County, IA · D+10Carroll County, IA · R+42Woodbury County, IA · R+23Webster County, IA · R+31Pottawattamie County, IA · R+20
How it voted
Share of the 2024 vote
Donald Trump ✓Republican64.8%255,113
Kamala HarrisDemocratic33.5%131,712
OtherAll other candidates1.7%6,669
D+60
R+60
36 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.
Districts are drawn from fractional county slices; this map shows the whole counties that overlap the district. District boundaries: TIGER 2024.
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: −31.4% in 2024.−31.4%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008−3.5%
2012−9.3%
2016−27.0%
2020−26.0%
2024−31.4%
DemocraticRepublican
5 presidential elections
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
R
−31.4%
131,712255,113393,494
R
−26.0%
146,819252,564407,179
R
−27.0%
129,659235,026390,478
R
−9.3%
173,836209,284383,120
R
−3.5%
184,067197,784392,238
Congressional elections · 16 Senate races

U.S. Senate

Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
YearWonD %R %Total
2022R43.3%55.4%1,230,416
2020R44.4%50.9%1,700,130
2016R35.7%60.1%1,541,036
2014R43.8%52.1%1,129,700
2010R33.3%64.4%1,116,063
2008D62.7%37.3%1,502,918
2004R27.9%70.2%1,479,228
2002D54.2%43.8%1,023,075
1998R30.5%68.4%947,907
1996D51.8%46.7%1,224,054
1992R27.2%69.6%1,292,494
1990D54.5%45.4%983,933
1986R33.6%66.0%891,762
1984D55.5%43.7%1,292,700
1980R45.5%53.5%1,276,986
1978R47.9%51.1%824,576

Demographics

2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
31.6%
Irish
10.5%
English
8.4%
American
5.3%
Italian
1.5%
French
1.0%
Scottish
1.0%
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
0.9%
85+
1.6%
2.4%
75–84
3.0%
5.5%
65–74
5.6%
6.3%
55–64
6.3%
5.6%
45–54
5.2%
6.1%
35–44
5.6%
6.1%
25–34
5.5%
6.1%
18–24
5.2%
8.8%
5–17
8.3%
3.0%
<5
2.7%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$72,924
Congressional District 4 ranks near the middle of US counties.
Congressional District 4$72,924
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
11.7%
Child poverty is below the national average.
Children under 1813.3%
Working age (18–64)11.0%
Seniors (65+)10.8%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
89.6%
speak English only
Spanish7.2%
Asian & Pacific Islander1.6%
Other Indo-European1.1%
Other languages0.5%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Mainline Protestant
19.7%
Catholic & Orthodox
15.8%
Methodist
6.8%
Other Christian
5.9%
Baptist
1.1%
Pentecostal & Holiness
1.0%
Non-Christian
0.4%
Source · 2020 US Religion Census. Remaining 49.3% of residents not counted as adherents by any reporting body.

Spanning rural farmland across Iowa's northwestern corner, this district delivered a 32-point presidential margin in 2024, reflecting an agricultural electorate that has shifted steadily and sharply toward one party over the past two decades.

Across the recorded series it reached a Republican high of thirty-one points in 2024. Between 2020 and 2024 the district moved five points toward the Republican candidate; the 2024 margin was thirty-one points.

A population of 798,035, a 84% non-Hispanic-white share, and a median household income of $72,924 describe the district.

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.
Congressional District 4, Iowa. Akashic. https://akashic.app/cd/1904/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did Congressional District 4, Iowa vote in 2024?
In 2024, Congressional District 4, Iowa voted Republican by 31.4 points (R+31), carried by the Republican candidate. Out of 393,494 votes cast, 131,712 went Democratic and 255,113 went Republican.
What is Congressional District 4, Iowa's political typology?
Akashic places Congressional District 4, Iowa in the "Sunbelt Conservative" 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 5 elections in the dataset, the district has voted Democratic 0 times, Republican 5 times, and other 0 times.
How many people live in Congressional District 4, Iowa?
Congressional District 4, Iowa has a population of 798,035 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Congressional District 4, Iowa?
Median household income in Congressional District 4, Iowa is $72,924 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Congressional District 4, Iowa?
Akashic tracks 5 presidential elections in Congressional District 4, Iowa from 2008 to 2024. Of those, 0 went Democratic and 5 went Republican. The district's typology — "Sunbelt Conservative" — captures where that record, its demographics, and its recent swing place it among American communities.