Bull Valley leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 89% of adults in Bull Valley typically vote, above the U.S. average of about 62%. Among adults in Bull Valley, ~37% vote Democratic, ~51% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Bull Valley compares
Among cities within 25 miles, Bull Valley leans more Republican than 82 of 127 neighbors.
Bull Valley runs about 27 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Bull Valley is one of the few Republican-leaning pockets.
Why Bull Valley 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 Bull Valley, not a ranked or complete list of what matters most.
Bull Valley votes Republican even though it is densely developed (about 27%, modestly below the Illinois average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Bull Valley runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Bull Valley, 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 Bull Valley looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Bull Valley 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 95% of households in Bull Valley own their home, about 20 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Ridgefield, IL R+6
- Wonder Lake, IL R+17
- Woodstock, IL D+3
- McCullom Lake, IL R+12
- Mchenry, IL R+10
- Greenwood, IL R+31
- Ringwood, IL R+25
- Prairie Grove, IL R+10
- Crystal Lake, IL D+3
- Holiday Hills, IL R+13
Cities with Similar Populations
- Meridian Hills, IN D+21
- Oakwood, VA R+60
- Guy, TX R+57
- Renville, MN R+41
- Lyndeborough, NH R+6
- Newport, NY R+48
- Park River, ND R+48
- Truesdale, MO R+50
- Konawa, OK R+54
- Berrien Center, MI R+25
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.