48034 is a Democratic stronghold. About 86% of voters here vote Democratic and 14% Republican.
About 76% of adults in 48034 typically vote, above the U.S. average of about 62%. Among adults in 48034, ~65% vote Democratic, ~11% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 48034 compares
Among zip codes within 15 miles, 48034 leans more Democratic than 72 of 85 neighbors.
48034 runs about 73 points more Democratic than Michigan as a whole. Michigan is roughly evenly split, and 48034 sits clearly on the Democratic side.
Politics vary noticeably by block within 48034. The west side is the most Democratic-leaning (D+80) and the south side is the least Democratic-leaning (D+63), a spread of about 18 points.
Why 48034 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 48034, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 97% of residents in 48034 live in densely developed areas, about 61 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 48034 sits in the top quarter (about 39%, above 80% of zip codes). 48034 runs against the grain of Michigan, a Democratic-leaning outlier in a roughly evenly split state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 48034, MI sits in the top tenth nationally on this measure.
Why turnout in 48034 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 48034 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 64%, above 61% 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 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.