Wheaton, IL Political Map | Democrat & Republican Areas in Wheaton

By the BestNeighborhood data science team. Last updated May 2026.

Wheaton leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.

 

About 82% of adults in Wheaton typically vote, above the U.S. average of about 62%. Among adults in Wheaton, ~50% vote Democratic, ~32% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.

How Wheaton compares

Among cities within 25 miles, Wheaton leans more Democratic than 136 of 173 neighbors.

Wheaton runs about 10 points more Democratic than Illinois as a whole.

Politics vary noticeably by neighborhood within Wheaton. The east side is the most Democratic-leaning (D+26) and the northwest side is the least Democratic-leaning (D+12), a spread of about 14 points.

Why Wheaton leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Wheaton, not a ranked or complete list of what matters most.

Dense areas vote Democratic. About 97% of residents in Wheaton live in densely developed areas, about 60 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Wheaton sits in the top quarter (about 66%, above 98% of cities). A high never-married share predicts Democratic voting, and about 31% of adults in Wheaton have never been married, above 77% of cities.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Wheaton, IL 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 Wheaton looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Wheaton 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Wheaton have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.

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Sources and methodology

Precinct-level voting records used to fit the model come from Illinois State Board of 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.