52142 leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 65% of adults in 52142 typically vote, near the U.S. average of about 62%. Among adults in 52142, ~23% vote Democratic, ~42% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 52142 compares
Among zip codes within 15 miles, 52142 leans more Republican than 2 of 12 neighbors.
52142 runs about 17 points more Republican than Iowa as a whole.
Politics vary noticeably by block within 52142. The south side is the most Republican-leaning (R+40) and the north side is the least Republican-leaning (R+28), a spread of about 13 points.
Why 52142 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 52142. The lean here lands roughly where demographic data alone would predict.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 52142, IA sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 52142 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 52142 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 64%, above 59% 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.