Pekin Heights leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 75% of adults in Pekin Heights typically vote, above the U.S. average of about 62%. Among adults in Pekin Heights, ~19% vote Democratic, ~56% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Pekin Heights compares
Among cities within 25 miles, Pekin Heights leans more Republican than 60 of 75 neighbors.
Pekin Heights runs about 60 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Pekin Heights is one of the few Republican-leaning pockets.
Why Pekin Heights 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 Pekin Heights, not a ranked or complete list of what matters most.
Pekin Heights votes against the grain of Illinois. Illinois leans Democratic overall, while Pekin Heights runs about 60 points more Republican. A high family-household share predicts Republican voting, and about 76% of households in Pekin Heights are family households, above 80% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Pekin Heights, IL sits above the national average 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 Pekin Heights looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Pekin Heights have completed high school, about 5 points above the Illinois average of 92%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Towne Oaks, IL R+38
- Dillon, IL R+49
- Pekin, IL R+25
- South Pekin, IL R+46
- Groveland, IL R+34
- Tremont, IL R+47
- Marquette Heights, IL R+31
- North Pekin, IL R+31
- Hollis, IL R+40
- Green Valley, IL R+46
Cities with Similar Populations
- Tofte, MN D+28
- Thayer Corners, NY R+36
- Park View, WV R+60
- Alta, UT D+55
- Big Springs, WV R+69
- York, IN R+45
- Lake Margrethe, MI R+35
- Downey, IA R+28
- Stonewall, KY R+59
- Payne, GA D+70
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.