49021 leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 78% of adults in 49021 typically vote, above the U.S. average of about 62%. Among adults in 49021, ~22% vote Democratic, ~56% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How 49021 compares
Among zip codes within 15 miles, 49021 is the most Republican-leaning.
49021 runs about 43 points more Republican than Michigan as a whole.
Why 49021 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 49021, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 49021, about 93% of residents are non-Hispanic white, about 21 points above the U.S. average of 72%; about 14% of adults hold a bachelor's degree, about 12 points below the Michigan average of 26%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 49021, MI sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 49021 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 49021 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 70%, about 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in 49021 own their home, above 86% 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.