48604 is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 68% of adults in 48604 typically vote, above the U.S. average of about 62%. Among adults in 48604, ~33% vote Democratic, ~35% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How 48604 compares
Among zip codes within 15 miles, 48604 leans more Republican than 6 of 18 neighbors.
Politically, 48604 sits close to the rest of Michigan.
Politics vary noticeably by block within 48604. The southwest side runs the most Democratic (D+10) and the northeast side runs the most Republican (R+27), a spread of about 37 points.
Why 48604 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 48604. The lean here lands roughly where demographic data alone would predict.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 48604, MI sits in the top 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 48604 looks the way it does
Turnout in 48604 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.