Iowa 1st Congressional District

Office (updates table and map)

President margin by year

Place winner margin

1876–2024 · D minus R

Full record · 1876 → 2024

2024

District 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

German30.3%30.5%12.5%

Irish14.3%12.8%9.4%

English11.2%10.2%9.5%

American4.7%4.6%5.3%

Dutch2.5%2.7%—

Norwegian2.5%4.1%—

Swedish1.9%1.9%—

Italian1.8%1.6%4.8%

Mexican3.9%5.0%11.3%

Puerto Rican0.4%0.3%1.8%

African American†3.4%2.6%9.9%

African0.4%0.3%0.5%

Sudanese0.2%0.2%—

Asian Indian0.5%0.5%1.4%

Chinese0.4%0.3%1.3%

Vietnamese0.3%0.3%0.6%

Korean0.2%0.2%0.4%

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-1	Iowa	United States
Median age	38.9	38.8	39.1
Age 18–24	10.6%	10.0%	9.2%
Age 65 and older	18.2%	18.1%	17.2%

Household economy

Measure	IA-1	Iowa	United States
Median household income	$73,680	$75,059	$84,427
Poverty rate	12.1%	11.1%	12.5%
Bachelor's degree or higher (25+)	33.4%	31.8%	35.6%

Housing and tenure

Measure	IA-1	Iowa	United States
Owner-occupied homes	71.6%	71.7%	65.2%
Renter-occupied homes	28.4%	28.3%	34.8%
Median home value	—	$208,000	$332,700
Median gross rent (monthly)	—	$972	$1,413
Renters paying 30%+ of income	47.9%	43.9%	51.1%
Vacant housing units	7.8%	8.5%	10.1%

Getting to work

Measure	IA-1	Iowa	United States
Mean commute	21.0 min	19.8 min	26.4 min
Commutes 60 minutes or more	4.3%	4.1%	8.6%
Drives alone to work	76.0%	76.0%	68.8%
Takes public transit	1.1%	0.7%	3.2%
Works from home	10.6%	11.3%	15.1%

Languages at home

Measure	IA-1	Iowa	United States
Speaks a non-English language at home	7.5%	9.2%	22.3%
Spanish	3.2%	4.7%	13.6%

Religious landscape

Measure	IA-1	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-1	Iowa	United States
Foreign-born residents	4.7%	5.9%	14.1%
Naturalized citizens	2.2%	2.6%	7.4%
Not U.S. citizens	2.5%	3.3%	6.8%
Veterans (18+)	6.6%	6.5%	6.2%
Income inequality (Gini)	—	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) · District housing, commuting and origins figures are constituent-county values weighted by each county’s share of the district — the Census publishes these at 119th-Congress lines and Akashic maps districts on the 2026 (cd:120) lines.

President results by year

Modeled candidate-vote estimate on current district boundaries

HarrisDemocratic44.9%190,502TrumpRepublican53.3%226,309OtherAll other candidates1.9%7,877

R+8.4

Lead: 35,807
Total: 424,688
vs nation: R+7.0