52146 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 85% of adults in 52146 typically vote, above the U.S. average of about 62%. Among adults in 52146, ~28% vote Democratic, ~57% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How 52146 compares
Among zip codes within 15 miles, 52146 leans more Republican than 6 of 10 neighbors.
52146 runs about 20 points more Republican than Iowa as a whole.
Why 52146 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 52146, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 52146, about 98% of residents are non-Hispanic white, about 25 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 9 points below the Iowa average of 24%.
High-school completion, developed land, and voter turnout
Places that combine high-school-completion-heavy adults and a rural land-use pattern tend to turn out at a higher rate, as 52146, IA does.
Why turnout in 52146 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 52146 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 69%, about 9 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 95% of households in 52146 own their home, about 20 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in 52146 have completed high school, above 93% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Iowa Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.