Iowa Congressional District 01

Congressional District Profile

Overview

District ID
IA-01
State
Iowa
District Number
01
Total Candidates
78
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 01

Voters

Registered Voters
550,947
Active Voters
461,270 (83.7%)

Party Registration

PartyVotersShare
Democratic161,36229.3%
Republican181,52532.9%
Unaffiliated203,17636.9%
Other parties4,8840.9%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–2026101,993 (18.5%)0 (0.0%)0 (0.0%)
2023–2024423,741 (76.9%)14,462 (2.6%)30,377 (5.5%)
2021–2022303,848 (55.2%)38,776 (7.0%)44,609 (8.1%)
2019–2020392,469 (71.2%)69,067 (12.5%)50,319 (9.1%)
2017–2018284,335 (51.6%)39,773 (7.2%)20,979 (3.8%)
2015–2016315,437 (57.3%)20,694 (3.8%)15,265 (2.8%)
2013–2014220,489 (40.0%)13,493 (2.4%)24,883 (4.5%)
2011–2012281,429 (51.1%)14,416 (2.6%)19,910 (3.6%)

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
780,647
Citizen Voting Age Population (CVAP)
606,138

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic738,89194.7%
Hispanic41,7575.3%
White672,23586.1%
Black30,2973.9%
Asian11,8751.5%
American Indian / Alaska Native6860.1%
Native Hawaiian / Pacific Islander2460.0%
Two or More Races2,1520.3%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic579,69895.6%
Hispanic26,4364.4%
White536,43288.5%
Black25,3664.2%
Asian12,4152.0%
American Indian / Alaska Native4,1360.7%
Native Hawaiian / Pacific Islander1760.0%
Two or More Races1,3820.2%

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

Candidates