La Grange leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 93% of adults in La Grange typically vote, above the U.S. average of about 62%. Among adults in La Grange, ~60% vote Democratic, ~33% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How La Grange compares
Among cities within 25 miles, La Grange leans more Democratic than 124 of 171 neighbors.
La Grange runs about 20 points more Democratic than Illinois as a whole.
Politics vary noticeably by neighborhood within La Grange. The northeast side is the most Democratic-leaning (D+49) and the southwest side is the least Democratic-leaning (D+9), a spread of about 39 points.
Why La Grange 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 La Grange, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in La Grange live in densely developed areas, about 63 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and La Grange sits in the top quarter (about 68%, above 98% of cities).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; La Grange, 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 La Grange looks the way it does
Areas with strong routine healthcare access turn out at higher rates. La Grange 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 74%, about 14 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in La Grange have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Western Springs, IL D+21
- Countryside, IL D+3
- Brookfield, IL D+23
- La Grange Park, IL D+34
- McCook, IL R+17
- Hodgkins, IL R+18
- Indian Head Park, IL D+13
- Lyons, IL D+14
- Westchester, IL D+34
- Hinsdale, IL D+12
Cities with Similar Populations
- Marlboro, NJ R+14
- Jerome, ID R+43
- Baker, LA D+56
- Wade Hampton, SC R+13
- St. Albans, WV R+27
- Seaford, NY R+35
- Rutherford, NJ D+13
- Elkins Park, PA D+70
- North Aurora, IL D+10
- Walterboro, SC R+6
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.