54151 leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 76% of adults in 54151 typically vote, above the U.S. average of about 62%. Among adults in 54151, ~21% vote Democratic, ~54% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 54151 compares
Among zip codes within 15 miles, 54151 is the most Republican-leaning.
54151 runs about 44 points more Republican than Wisconsin as a whole.
Why 54151 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 54151, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 54151, about 96% of residents are non-Hispanic white, about 24 points above the U.S. average of 72%; about 17% of adults hold a bachelor's degree, about 9 points below the Wisconsin average of 26%. Car-dependent areas vote Republican, and about 84% of residents in 54151 drive to work alone, above 83% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 54151, WI 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 54151 looks the way it does
Turnout in 54151 sits close to the national pattern. 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.