Akashic
1892–2024
Akashic
Iowa 21st State House District
presidential margin
2008D+7.52012D+5.22016R+14.32020R+18.52024R+23.5
full record · 2008 → 2024
R+23.5
2024
median income$79,074U.S. $80,734 · IA $75,059
median age38.8U.S. 39.1 · IA 38.8
poverty rate7.3%U.S. 12.5% · IA 11.1%
bachelor’s+ (25+)32.9%U.S. 35.6% · IA 31.8%
non-english3.0%U.S. 22.3% · IA 9.2%
race · ethnicity · ancestry
German28.2%
Irish14.5%
English13.9%
Mexican1.6%
Puerto Rican0.3%
Guatemalan0.2%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Warren County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Iowa 21st State House District

Akashic
Iowa 21st State House DistrictTrumpR+23.5
2024
2024 presidential margin for Iowa 21st State House DistrictThe boundary of Iowa 21st State House District, filled by its 2024 presidential margin (R+23.5), over faint outlines of the counties it is drawn from.Iowa 21st State House District · R+23.5
How it voted
Share of the 2024 vote
Donald Trump ✓Republican60.8%10,865
Kamala HarrisDemocratic37.3%6,660
Robert F. Kennedy Jr.We The People2.0%351
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 2 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (2 counties) — table
2024 presidential result by county for Iowa 21st State House District — winner and D-vs-R margin.
CountyWinnerMargin
Marion County, IARepublicanR+37.6
Warren County, IARepublicanR+20.6
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
R
37.3%Harris6,660
60.8%Trump10,865
2.0%Kennedy351
−23.5%
17,876
R
39.7%Biden7,020
58.2%Trump10,292
2.1%Jorgensen378
−18.5%
17,690
R
39.0%Clinton6,420
53.3%Trump8,767
7.6%Johnson1,254
−14.3%
16,441
D
52.6%Obama8,271
47.4%Romney7,457
0.0%
+5.2%
15,728
D
52.6%Obama8,310
45.1%McCain7,131
2.2%Nader355
+7.5%
15,796
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: −23.5% in 2024.flipped R · 2016−23.5%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+7.5%
2012+5.2%
2016−14.3%
2020−18.5%
2024−23.5%
DemocraticRepublican
current representation
Current officeholders
RBrooke BodenState House · 21

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

With a 2024 presidential margin exceeding 33 points, this rural Iowa district ranks among the state's most one-sided, reflecting the broader rural realignment that has reshaped Iowa's electoral map over the past decade.

Across the recorded series it reached a Democratic high of 7.5 points in 2008 and a Republican high of 23.5 points in 2024. Between 2020 and 2024 the district moved 5.0 points toward the Republican candidate; the 2024 margin was 23.5 points.

A population of 31,787, a 93% non-Hispanic-white share, and a median household income of $79,074 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 23 and State House District 47.

Political twins — state-house districts

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

State House District 23
Iowa
93.9twin score
12-yr trend% White2024 margin
State House District 47
Iowa
92.0twin score
12-yr trend2020–2024 trajectory% White
State House District 22
Iowa
90.3twin score
% White2020–2024 trajectory12-yr trend

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.
Iowa 21st State House District. Akashic. https://akashic.app/sld-lower/19021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Iowa 21st State House District

counties it covers2
Marion CountyWarren County

Frequently asked questions

How did Iowa 21st State House District vote in 2024?
In 2024, Iowa 21st State House District voted Republican by 23.5 points (R+23.5), carried by the Republican candidate. Out of 17,876 votes cast, 6,660 went Democratic and 10,865 went Republican.
When did Iowa 21st State House District last vote Democratic?
The most recent presidential election in which Iowa 21st State House District voted Democratic was 2012.
How many people live in Iowa 21st State House District?
Iowa 21st State House District has a population of 31,787 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Iowa 21st State House District?
Median household income in Iowa 21st State House District is $79,074 — below the national median of $80,734. The Iowa state median is $75,059.
What is the political history of Iowa 21st State House District?
Akashic tracks 5 presidential elections in Iowa 21st State House District from 2008 to 2024. Of those, 2 went Democratic and 3 went Republican.