48237 is a Democratic stronghold. About 79% of voters here vote Democratic and 21% Republican.
About 76% of adults in 48237 typically vote, above the U.S. average of about 62%. Among adults in 48237, ~60% vote Democratic, ~16% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 48237 compares
Among zip codes within 15 miles, 48237 leans more Democratic than 69 of 100 neighbors.
48237 runs about 60 points more Democratic than Michigan as a whole. Michigan is roughly evenly split, and 48237 sits clearly on the Democratic side.
Politics vary noticeably by block within 48237. The southwest side is the most Democratic-leaning (D+84) and the north side is the least Democratic-leaning (D+25), a spread of about 59 points.
Why 48237 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 48237, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 48237 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 45% of adults in 48237 have never been married, above 92% of zip codes. 48237 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; 48237, 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 48237 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 48237 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 67%, about 7 points above the U.S. average of 60%. 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.