48215 is a Democratic stronghold. About 92% of voters here vote Democratic and 8% Republican.
About 71% of adults in 48215 typically vote, above the U.S. average of about 62%. Among adults in 48215, ~65% vote Democratic, ~6% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 48215 compares
Among zip codes within 15 miles, 48215 leans more Democratic than 48 of 58 neighbors.
48215 runs about 86 points more Democratic than Michigan as a whole. Michigan is roughly evenly split, and 48215 sits clearly on the Democratic side.
Why 48215 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 48215, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 95% of residents in 48215 live in densely developed areas, about 59 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 54% of adults in 48215 have never been married, above 96% of zip codes. 48215 runs against the grain of Michigan, a Democratic-leaning outlier in a roughly evenly split state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 48215, MI sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 48215 looks the way it does
Turnout in 48215 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 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.