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Akashic

state senate district

Iowa 19th State Senate District

Office (updates table and map)

President margin by year

Place winner margin

1876–2024 · D minus R

Full record · 1876 → 2024

2024

Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab

The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.

People and households

Who lives here

Exact values for this place, its state, and the United States.

Race · ethnicity · ancestry

Communities and origins

German24.9%30.5%12.5%

Dutch13.9%2.7%—

English12.5%10.2%9.5%

Irish11.8%12.8%9.4%

American6.2%4.6%5.3%

Norwegian3.0%4.1%—

Italian2.2%1.6%4.8%

Scottish1.3%—1.3%

Mexican1.3%5.0%11.3%

Puerto Rican0.4%0.3%1.8%

Guatemalan0.3%0.4%0.5%

Honduran0.3%0.2%0.3%

Sudanese0.6%0.2%—

African American†0.4%2.6%9.9%

Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.

Age and life stage

Measure	IA SD 19	Iowa	United States
Median age	40.5	38.8	39.1
Age 18–24	8.7%	10.0%	9.2%
Age 65 and older	19.6%	18.1%	17.2%

Household economy

Measure	IA SD 19	Iowa	United States
Median household income	$74,991	$75,059	$84,427
Poverty rate	7.8%	11.1%	12.5%
Bachelor's degree or higher (25+)	24.6%	31.8%	35.6%

Housing and tenure

Measure	IA SD 19	Iowa	United States
Owner-occupied homes	74.4%	71.7%	65.2%
Renter-occupied homes	25.6%	28.3%	34.8%
Median home value	$210,700	$208,000	$332,700
Median gross rent (monthly)	$868	$972	$1,413
Renters paying 30%+ of income	42.7%	43.9%	51.1%
Vacant housing units	7.2%	8.5%	10.1%

Getting to work

Measure	IA SD 19	Iowa	United States
Mean commute	21.8 min	19.8 min	26.4 min
Commutes 60 minutes or more	4.6%	4.1%	8.6%
Drives alone to work	78.1%	76.0%	68.8%
Takes public transit	0.1%	0.7%	3.2%
Works from home	10.4%	11.3%	15.1%

Languages at home

Measure	IA SD 19	Iowa	United States
Speaks a non-English language at home	4.3%	9.2%	22.3%
Spanish	2.1%	4.7%	13.6%

Religious landscape

Measure	IA SD 19	Iowa	United States
Catholic	—	14.7%	18.6%
Evangelical Protestant	—	10.9%	16.5%
Unclaimed / not counted	—	55.2%	51.5%

Origins and service

Measure	IA SD 19	Iowa	United States
Foreign-born residents	2.6%	5.9%	14.1%
Naturalized citizens	0.9%	2.6%	7.4%
Not U.S. citizens	1.7%	3.3%	6.8%
Veterans (18+)	6.9%	6.5%	6.2%
Income inequality (Gini)	0.438	0.444	0.483

American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations · American Community Survey 2024 — housing and tenure (B25003, B25002, B25077, B25064, B25070), commuting (B08013, B08303, B08301), origins and service (B05002, B21001, B19083).

President results by year

Modeled candidate-vote estimate on current district boundaries

HarrisDemocratic31.6%11,312TrumpRepublican66.7%23,914OtherAll other candidates1.7%626

R+35.2

Lead: 12,602
Total: 35,852
vs nation: R+33.7

modeled Census-place estimatemodeled estimate

BidenDemocratic33.8%12,029TrumpRepublican64.3%22,870OtherAll other candidates1.9%661

R+30.5

Lead: 10,841
Total: 35,560
vs nation: R+34.9

modeled Census-place estimatemodeled estimate

ClintonDemocratic32.2%10,836TrumpRepublican59.5%20,009OtherAll other candidates8.3%2,810

R+27.3

Lead: 9,173
Total: 33,655
vs nation: R+29.3

modeled Census-place estimatemodeled estimate

ObamaDemocratic46.1%15,416RomneyRepublican51.8%17,305OtherAll other candidates2.1%703

R+5.7

Lead: 1,889
Total: 33,424
vs nation: R+9.5

modeled Census-place estimatemodeled estimate

ObamaDemocratic46.9%15,420McCainRepublican51.0%16,750OtherAll other candidates2.1%698

R+4.0

Lead: 1,330
Total: 32,868
vs nation: R+11.3

modeled Census-place estimatemodeled estimate

KerryDemocratic44.8%14,935BushRepublican54.3%18,112OtherAll other candidates0.9%286

R+9.5

Lead: 3,177
Total: 33,333
vs nation: R+7.1

modeled Census-place estimatemodeled estimate

GoreDemocratic43.2%12,668BushRepublican54.5%15,971OtherAll other candidates2.3%685

R+11.3

Lead: 3,303
Total: 29,324
vs nation: R+11.8

modeled Census-place estimatemodeled estimate

ClintonDemocratic48.1%12,916DoleRepublican43.7%11,733OtherAll other candidates8.1%2,176

D+4.4

Lead: 1,183
Total: 26,825
vs nation: R+4.1

modeled Census-place estimatemodeled estimate

Key facts

2024 presidential margin: R+35.2MIT Election Lab
Population: 63,7332024 5-year
Population density: 48 / sq mi2024 5-year · TIGER/Line
Land area: 1,326 sq miTIGER/Line
Median household income: $74,9912024 5-year
White (non-Hispanic): 91.9%2024 5-year
Black: 1.4%2024 5-year
Hispanic / Latino: 2.5%2024 5-year
Peak Democratic margin: D+28.1 in 1964MIT Election Lab
Peak Republican margin: R+40.4 in 1924MIT Election Lab
Most similar: State Senate District 12, IA · twin score 96.5

presidential history

Party record book

Iowa 19th State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.

1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark

Largest share of the presidential candidate vote cast here.

Democratic

Lyndon B. Johnson1964

64.0%

15,864 votes · D+28.1 · modeled estimate

Runner-up · Franklin D. Roosevelt, 1932 · 56.7%

Republican

Herbert Hoover1928

69.0%

15,153 votes · R+38.0 · modeled estimate

Runner-up · Donald Trump, 2024 · 66.7%

Most votes

Largest number of votes cast for the party’s presidential nominee here.

Democratic

Lyndon B. Johnson1964

15,864votes

64.0% of the vote · D+28.1 · modeled estimate

Runner-up · Barack Obama, 2008 · 15,420 votes

Republican

Donald Trump2024

23,914votes

66.7% of the vote · R+35.2 · modeled estimate

Runner-up · Donald Trump, 2020 · 22,870 votes

Best relative to the U.S.

This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.

Democratic

Michael Dukakis1988

+14.8pts D vs U.S.

Place D+7.0 · U.S. R+7.7 · modeled estimate

Runner-up · Walter Mondale, 1984 · +8.6 pts

Republican

Donald Trump2020

+34.9pts R vs U.S.

Place R+30.5 · U.S. D+4.5 · modeled estimate

Runner-up · Donald Trump, 2024 · +33.7 pts

current representation

Current officeholders

RKen RozenboomState Senate · 19

State legislative officeholder from OpenStates nightly current-legislator data.

U.S. House elections · 3 House

Senate and governor results are in the Office selector at the top of this page.

U.S. House

Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.

Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year	Vote lead	Democratic	Republican	Total
2024	R	38.6%13,053	61.4%20,736	33,789
2020	R	38.2%12,632	61.8%20,435	33,067
2018	R	44.9%11,667	55.1%14,326	25,993

Iowa 19th State Senate District sits in the Corn Belt. In 2024 it voted Republican.

Across the recorded series it reached a Democratic high of 28.1 points in 1964 and a Republican high of 40.4 points in 1924. Between 2020 and 2024 the district moved 4.7 points toward the Republican candidate; the 2024 margin was 35.2 points.

A population of 63,733, a 92% non-Hispanic-white share, and a median household income of $74,991 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 12 and State Senate District 44.

Political twins — state-senate districts

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

State Senate District 12

12-yr trend2016–2024 trajectory

State Senate District 44

12-yr trend2016–2024 trajectory

State Senate District 9

12-yr trend2020–2024 trajectory% White

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.

District research tools

Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

Iowa 19th State Senate District. Akashic. https://akashic.app/sld-upper/19019/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Iowa at the ballot boxAll elections →

Presidentcounty detail2024 US Senatestatewide2022 Governorstate + county2022 US Houseall districts2024

Places within Iowa 19th State Senate District

counties it covers3

Jasper County Mahaska County Marion County

Frequently asked questions

How did Iowa 19th State Senate District vote in 2024?

In 2024, Iowa 19th State Senate District voted Republican by 35.2 points (R+35.2), carried by the Republican candidate. Out of 35,852 votes cast, 11,312 went Democratic and 23,914 went Republican.

When did Iowa 19th State Senate District last vote Democratic?

The most recent presidential election in which Iowa 19th State Senate District voted Democratic was 1996.

How many people live in Iowa 19th State Senate District?

Iowa 19th State Senate District has a population of 63,733 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Iowa 19th State Senate District?

Median household income in Iowa 19th State Senate District is $74,991 — below the national median of $80,734. The Iowa state median is $75,059.

What is the political history of Iowa 19th State Senate District?

Akashic tracks 38 presidential elections in Iowa 19th State Senate District from 1876 to 2024. Of those, 11 went Democratic and 27 went Republican.