Plattville leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 73% of adults in Plattville typically vote, above the U.S. average of about 62%. Among adults in Plattville, ~25% vote Democratic, ~48% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Plattville compares
Among cities within 25 miles, Plattville leans more Republican than 51 of 73 neighbors.
Plattville runs about 43 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Plattville is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Plattville. The southwest side is the most Republican-leaning (R+46) and the northeast side is the least Republican-leaning (R+9), a spread of about 37 points.
Why Plattville 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 Plattville, not a ranked or complete list of what matters most.
Plattville votes against the grain of Illinois. Illinois leans Democratic overall, while Plattville runs about 43 points more Republican. A high family-household share predicts Republican voting, and about 80% of households in Plattville are family households, above 89% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Plattville, 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 Plattville looks the way it does
Turnout in Plattville sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lisbon Center, IL R+43
- Minooka, IL R+20
- Shorewood, IL R+6
- Lisbon, IL R+46
- Plainfield, IL D+4
- Yorkville, IL R+12
- Channahon, IL R+25
- Newark, IL R+38
- Oswego, IL D+8
- Millbrook, IL R+43
Cities with Similar Populations
- Acra, NY R+27
- Thornhurst, PA R+21
- Jonesville, AR R+75
- Hoard, TX R+76
- Smithers, WV R+32
- Old Lebanon, WI R+32
- Glen Rose, AR R+66
- Cuba, OH R+63
- Jobstown, NJ R+23
- Sullivanville, NY R+35
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.