South Roxana leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 57% of adults in South Roxana typically vote, near the U.S. average of about 62%. Among adults in South Roxana, ~18% vote Democratic, ~39% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How South Roxana compares
Among cities within 25 miles, South Roxana leans more Republican than 127 of 163 neighbors.
South Roxana runs about 49 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while South Roxana is one of the few Republican-leaning pockets.
Why South Roxana 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 South Roxana, not a ranked or complete list of what matters most.
South Roxana votes Republican even though it is densely developed (about 43%, modestly above the Illinois average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Low college attainment predicts Republican voting, and South Roxana sits in the bottom quarter (about 9%, below 94% of cities). South Roxana runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Never-married share, developed land, and voter turnout
Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as South Roxana, IL does.
Why turnout in South Roxana looks the way it does
Renters vote less often than owners. About 29% of households in South Roxana rent, above 83% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Roxana, IL R+22
- Hartford, IL R+32
- Wood River, IL R+20
- Poag, IL D+4
- East Alton, IL R+20
- Rosewood Heights, IL R+30
- Wanda, IL R+29
- Edwardsville, IL D+6
- Bethalto, IL R+27
- Cottage Hills, IL R+24
Cities with Similar Populations
- Ada, MN R+22
- Stephentown, NY R+20
- Sackets Harbor, NY R+8
- Johnsonville, NY R+39
- Theresa, WI R+52
- Kokomo, MS R+46
- Cronanville, TN R+11
- Waimea Kauai, HI D+18
- Atwater, MN R+45
- Wakefield, NE R+48
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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.