48821 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 90% of adults in 48821 typically vote, above the U.S. average of about 62%. Among adults in 48821, ~42% vote Democratic, ~48% Republican, and ~10% don't vote. The map below shows estimated turnout by block group.
How 48821 compares
Among zip codes within 15 miles, 48821 leans more Republican than 16 of 20 neighbors.
48821 runs about 5 points more Republican than Michigan as a whole.
Politics vary noticeably by block within 48821. The northeast side runs the most Democratic (D+5) and the west side runs the most Republican (R+18), a spread of about 22 points.
Why 48821 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 48821. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 48821, MI sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 48821 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 48821 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 73%, about 13 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in 48821 own their home, compared to around 62% in nearby zip codes. High high-school completion lines up with higher turnout, and about 97% of adults in 48821 have completed high school, above 91% 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.