50527 is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 83% of adults in 50527 typically vote, above the U.S. average of about 62%. Among adults in 50527, ~19% vote Democratic, ~64% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How 50527 compares
Among zip codes within 15 miles, 50527 leans more Republican than 6 of 10 neighbors.
50527 runs about 41 points more Republican than Iowa as a whole.
Why 50527 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 50527, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 5% of residents in 50527 live in densely developed areas, about 11 points below the Iowa average of 16%. A high white share with below-average college attainment predicts Republican voting, and 50527 fits that profile on both counts.
Population density and Republican lean
Places with low population density tend to lean Republican; 50527, IA sits in the bottom tenth nationally on this measure.
Why turnout in 50527 looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in 50527 have completed high school, about 8 points above the U.S. average of 90%. 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.