54102 leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 86% of adults in 54102 typically vote, above the U.S. average of about 62%. Among adults in 54102, ~25% vote Democratic, ~61% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How 54102 compares
Among zip codes within 15 miles, 54102 leans more Republican than 2 of 4 neighbors.
54102 runs about 41 points more Republican than Wisconsin as a whole.
Why 54102 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 54102, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 12% of adults in 54102 hold a bachelor's degree, about 14 points below the Wisconsin average of 26%. Rural areas with a high white share vote Republican. Non-Hispanic white share in 54102 is about 93%, well above similar-sized zip codes (around 74%).
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 54102, WI sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 54102 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 54102 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 58% of zip codes. Homeowners vote more often than renters, and about 92% of households in 54102 own their home, about 17 points above the U.S. average of 75%. 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 Wisconsin Elections Commission, 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.