53215 leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 40% of adults in 53215 typically vote, below the U.S. average of about 62%. Among adults in 53215, ~27% vote Democratic, ~13% Republican, and ~60% don't vote. The map below shows estimated turnout by block group.
How 53215 compares
Among zip codes within 15 miles, 53215 leans more Democratic than 24 of 45 neighbors.
53215 runs about 36 points more Democratic than Wisconsin as a whole. Wisconsin is roughly evenly split, and 53215 sits clearly on the Democratic side.
Politics vary noticeably by block within 53215. The northeast side is the most Democratic-leaning (D+42) and the west side is the least Democratic-leaning (D+25), a spread of about 17 points.
Why 53215 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 53215, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 53215 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 48% of adults in 53215 have never been married, above 94% of zip codes. 53215 runs against the grain of Wisconsin, a Democratic-leaning outlier in a roughly evenly split state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 53215, WI sits in the bottom tenth nationally 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 53215 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 53215 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 17 points below the Wisconsin average of 66%. Renters vote less often than owners, and about 53% of households in 53215 rent, about 28 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 38% of adults in 53215 report food insecurity, above 97% 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 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.