48178 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 98% of adults in 48178 typically vote, above the U.S. average of about 62%. Among adults in 48178, ~42% vote Democratic, ~56% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.
How 48178 compares
Among zip codes within 15 miles, 48178 leans more Republican than 25 of 34 neighbors.
48178 runs about 12 points more Republican than Michigan as a whole.
Politics vary noticeably by block within 48178. The northwest side is the most Republican-leaning (R+21) and the south side is the least Republican-leaning (R+8), a spread of about 13 points.
Why 48178 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 48178, not a ranked or complete list of what matters most.
48178 votes Republican even though it is densely developed (about 65%, far above the Michigan average of 31%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 75% of households in 48178 are family households, above 79% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 48178, MI sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 48178 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 48178 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 77%, about 17 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in 48178 own their home, about 16 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in 48178 have completed high school, above 92% 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.