48230 leans Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 94% of adults in 48230 typically vote, above the U.S. average of about 62%. Among adults in 48230, ~61% vote Democratic, ~33% Republican, and ~6% don't vote. The map below shows estimated turnout by block group.
How 48230 compares
Among zip codes within 15 miles, 48230 leans more Democratic than 24 of 56 neighbors.
48230 runs about 31 points more Democratic than Michigan as a whole. Michigan is roughly evenly split, and 48230 sits clearly on the Democratic side.
Politics vary noticeably by block within 48230. The west side is the most Democratic-leaning (D+38) and the northeast side is the least Democratic-leaning (D+19), a spread of about 18 points.
Why 48230 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 48230, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 73% of adults in 48230 hold a bachelor's degree, about 45 points above the U.S. average of 28%. Dense areas vote Democratic, and 48230 sits in the top fifth on density (about 87%, above 86% of zip codes). 48230 runs against the grain of Michigan, a Democratic-leaning outlier in a roughly evenly split state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 48230, 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 48230 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 48230 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 81%, about 21 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in 48230 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.