52645 leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 83% of adults in 52645 typically vote, above the U.S. average of about 62%. Among adults in 52645, ~26% vote Democratic, ~56% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How 52645 compares
Among zip codes within 15 miles, 52645 leans more Republican than 5 of 15 neighbors.
52645 runs about 22 points more Republican than Iowa as a whole.
Politics vary noticeably by block within 52645. The northeast side is the most Republican-leaning (R+48) and the southeast side is the least Republican-leaning (R+30), a spread of about 18 points.
Why 52645 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 52645, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in 52645 drive to work alone, about 15 points above the U.S. average of 74%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 52645, IA sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 52645 looks the way it does
High high-school completion lines up with higher turnout, and about 96% of adults in 52645 have completed high school, above 80% 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.