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

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

Batavia leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.

 

About 91% of adults in Batavia typically vote, above the U.S. average of about 62%. Among adults in Batavia, ~53% vote Democratic, ~38% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.

How Batavia compares

Among cities within 25 miles, Batavia leans more Democratic than 102 of 135 neighbors.

Batavia runs about 5 points more Democratic than Illinois as a whole.

Politics vary noticeably by neighborhood within Batavia. The northeast side is the most Democratic-leaning (D+21) and the southwest side is the least Democratic-leaning (D+6), a spread of about 15 points.

Why Batavia 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 Batavia, not a ranked or complete list of what matters most.

Areas with high college attainment vote Democratic. About 58% of adults in Batavia hold a bachelor's degree, about 29 points above the U.S. average of 28%. Dense areas vote Democratic, and Batavia sits in the top fifth on density (about 84%, above 95% of cities).

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Batavia, IL sits in the top 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 Batavia looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Batavia 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%. High high-school completion lines up with higher turnout, and about 97% of adults in Batavia have completed high school, above 91% 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.