Johnsonville is a Republican stronghold. About 12% of voters here vote Democratic and 88% Republican.
About 55% of adults in Johnsonville typically vote, below the U.S. average of about 62%. Among adults in Johnsonville, ~7% vote Democratic, ~48% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How Johnsonville compares
Among cities within 25 miles, Johnsonville leans more Republican than 50 of 53 neighbors.
Johnsonville runs about 86 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Johnsonville is one of the few Republican-leaning pockets.
Why Johnsonville 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 Johnsonville, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Johnsonville, about 97% of residents are non-Hispanic white, about 25 points above the U.S. average of 72%; about 13% of adults hold a bachelor's degree, about 14 points below the Illinois average of 27%. A high family-household share predicts Republican voting, and about 76% of households in Johnsonville are family households, above 80% of cities. Johnsonville runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Johnsonville, IL sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Johnsonville looks the way it does
Crowded housing lines up with lower turnout. About 14% of homes in Johnsonville have more than one occupant per room, in the top fraction of cities. Low high-school completion lines up with lower turnout, and about 74% of adults in Johnsonville have completed high school, below 96% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Round Prairie, IL R+78
- Cisne, IL R+70
- Rinard, IL R+73
- Crisp, IL R+79
- Zenith, IL R+71
- Geff, IL R+73
- Xenia, IL R+73
- Jeffersonville, IL R+73
- Enterprise, IL R+75
- Stratton, IL R+76
Cities with Similar Populations
- Hitchita, OK R+67
- Knoxo, MS D+8
- Camp Ground, IL R+60
- Point Blue, LA R+39
- Carmen, ID R+64
- Shickley, NE R+66
- Outing, MN R+36
- Dartmont, WV R+68
- Fossil, OR R+50
- Sullivan, NH D+4
All Local Stats
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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.