48015 leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 68% of adults in 48015 typically vote, above the U.S. average of about 62%. Among adults in 48015, ~39% vote Democratic, ~29% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How 48015 compares
Among zip codes within 15 miles, 48015 leans more Democratic than 32 of 79 neighbors.
48015 runs about 17 points more Democratic than Michigan as a whole. Michigan is roughly evenly split, and 48015 sits clearly on the Democratic side.
Politics vary noticeably by block within 48015. The southwest side is the most Democratic-leaning (D+29) and the north side is the least Democratic-leaning (D+5), a spread of about 24 points.
Why 48015 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 48015, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 48015 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 40% of adults in 48015 have never been married, above 88% of zip codes. 48015 runs against the grain of Michigan, a Democratic-leaning outlier in a roughly evenly split state.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 48015, MI sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 48015 looks the way it does
Turnout in 48015 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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 Michigan Department 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.