Ridgefield leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 90% of adults in Ridgefield typically vote, above the U.S. average of about 62%. Among adults in Ridgefield, ~42% vote Democratic, ~48% Republican, and ~10% don't vote. The map below shows estimated turnout by block group.
How Ridgefield compares
Among cities within 25 miles, Ridgefield leans more Republican than 63 of 131 neighbors.
Ridgefield runs about 17 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Ridgefield is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Ridgefield. The southwest side runs the most Democratic (Even) and the northeast side runs the most Republican (R+17), a spread of about 17 points.
Why Ridgefield 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 Ridgefield, not a ranked or complete list of what matters most.
Ridgefield votes Republican even though it is densely developed (about 29%, about 7 points below the U.S. average of 36%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Ridgefield runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Ridgefield, 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 Ridgefield looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Ridgefield 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 68%, about 8 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Bull Valley, IL R+16
- Woodstock, IL D+3
- Lakewood, IL R+4
- Crystal Lake, IL D+3
- Prairie Grove, IL R+10
- Mchenry, IL R+10
- Lake in the Hills, IL Even
- Wonder Lake, IL R+17
- Franklinville, IL R+17
- McCullom Lake, IL R+12
Cities with Similar Populations
- Attoyac, TX R+74
- Granville, TN R+65
- Witter, AR R+65
- Idell, NJ R+19
- Gentry, MO R+69
- Sugar Valley, WV R+66
- Lenox, MO R+71
- Emma, MO R+64
- Richville, MI R+38
- West Stockholm, NY R+35
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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.