Iowa Congressional District 03

Congressional District Profile

Overview

District ID
IA-03
State
Iowa
District Number
03
Total Candidates
103
Election Cycles
2026, 2024, 2022, 2020, 2018, 2016, 2014, 2012, 2010, 2008, 2006, 2004, 2002, 2000, 1998, 1996, 1994, 1992, 1990, 1988, 1986, 1984, 1982, 1980

View office details for U.S. Representative - Iowa District 03

Voters

Registered Voters
538,411
Active Voters
456,697 (84.8%)

Party Registration

PartyVotersShare
Democratic165,90530.8%
Republican183,39734.1%
Unaffiliated183,83834.1%
Other parties5,2711.0%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–2026125,066 (23.2%)0 (0.0%)0 (0.0%)
2023–2024424,269 (78.8%)22,837 (4.2%)23,526 (4.4%)
2021–2022312,669 (58.1%)48,255 (9.0%)46,826 (8.7%)
2019–2020395,951 (73.5%)70,190 (13.0%)45,997 (8.5%)
2017–2018296,316 (55.0%)49,434 (9.2%)18,803 (3.5%)
2015–2016318,943 (59.2%)21,804 (4.0%)17,078 (3.2%)
2013–2014217,448 (40.4%)9,421 (1.7%)31,192 (5.8%)
2011–2012279,380 (51.9%)7,071 (1.3%)18,409 (3.4%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population
779,781
Citizen Voting Age Population (CVAP)
585,632

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic725,51693.0%
Hispanic54,2677.0%
White644,38482.6%
Black36,1554.6%
Asian22,2412.9%
American Indian / Alaska Native5110.1%
Native Hawaiian / Pacific Islander6150.1%
Two or More Races1,8570.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic556,21795.0%
Hispanic29,4165.0%
White505,64186.3%
Black27,3674.7%
Asian18,1643.1%
American Indian / Alaska Native3,7430.6%
Native Hawaiian / Pacific Islander1910.0%
Two or More Races1,3180.2%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation.

Candidates