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Iowa's 4th Congressional District
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Iowa actually voted.
Model Iowa's 4th Congressional District →
Current officeholder
Randy Feenstra Republican
2024 result
Republican R+34.4
2024 votes cast
372,697
Office
U.S. House
Who lives in this district
This district is home to about 795,592 people, median age 38.7, median household income $70,703.
Population
795,592
Median age
38.7
Median household income
$70,703
Bachelor's degree or higher
26.3%
Race & ethnicity: White 82.5% · Black 1.9% · Hispanic 9.9% · Asian 2.1%
Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Iowa's 4th Congressional District in five steps
- Set the candidates. Name the contenders for the Iowa's 4th Congressional District (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Iowa's 4th Congressional District in the simulator →