48911 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 72% of adults in 48911 typically vote, above the U.S. average of about 62%. Among adults in 48911, ~50% vote Democratic, ~22% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How 48911 compares
Among zip codes within 15 miles, 48911 leans more Democratic than 13 of 21 neighbors.
48911 runs about 40 points more Democratic than Michigan as a whole. Michigan is roughly evenly split, and 48911 sits clearly on the Democratic side.
Politics vary noticeably by block within 48911. The northwest side is the most Democratic-leaning (D+55) and the southwest side is the least Democratic-leaning (D+18), a spread of about 37 points.
Why 48911 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 48911, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 88% of residents in 48911 live in densely developed areas, about 52 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 42% of adults in 48911 have never been married, above 90% of zip codes. 48911 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; 48911, MI sits in the top quarter nationally on this measure.
Why turnout in 48911 looks the way it does
Turnout in 48911 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.