Sunny Hill Estates leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 86% of adults in Sunny Hill Estates typically vote, above the U.S. average of about 62%. Among adults in Sunny Hill Estates, ~30% vote Democratic, ~56% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Sunny Hill Estates compares
Among cities within 25 miles, Sunny Hill Estates leans more Republican than 36 of 75 neighbors.
Sunny Hill Estates runs about 41 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Sunny Hill Estates is one of the few Republican-leaning pockets.
Why Sunny Hill Estates 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 Sunny Hill Estates, not a ranked or complete list of what matters most.
Sunny Hill Estates votes against the grain of Illinois. Illinois leans Democratic overall, while Sunny Hill Estates runs about 41 points more Republican. A high family-household share predicts Republican voting, and about 75% of households in Sunny Hill Estates are family households, above 76% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Sunny Hill Estates, IL sits in the top quarter 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 Sunny Hill Estates looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sunny Hill Estates 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 69%, about 9 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in Sunny Hill Estates own their home, about 19 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sunny Hill, IL R+33
- Orion, IL R+31
- Warner, IL R+33
- Coal Valley, IL R+18
- Cable, IL R+30
- Oak Grove, IL R+20
- Sherrard, IL R+29
- Green Rock, IL R+21
- Lynn Center, IL R+36
- Milan, IL R+9
Cities with Similar Populations
- Carpenter, SD R+59
- Hendersonville, PA R+11
- Neva, TN R+66
- Brockwell, AR R+70
- Springville, WI R+13
- Childs, NY R+45
- Stith, TX R+79
- East Lexington, VA R+38
- Shungnak, AK D+19
- Hobart, PA R+38
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.