Mount Zion leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 96% of adults in Mount Zion typically vote, above the U.S. average of about 62%. Among adults in Mount Zion, ~29% vote Democratic, ~67% Republican, and ~4% don't vote. The map below shows estimated turnout by block group.
How Mount Zion compares
Among cities within 25 miles, Mount Zion leans more Republican than 3 of 61 neighbors.
Mount Zion runs about 51 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Mount Zion is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Mount Zion. The southeast side is the most Republican-leaning (R+52) and the north side is the least Republican-leaning (R+37), a spread of about 15 points.
Why Mount Zion 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 Mount Zion, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Mount Zion drive to work alone, about 16 points above the U.S. average of 74%. Mount Zion runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Mount Zion, IL sits in the top tenth nationally on this measure.
Why turnout in Mount Zion looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in Mount Zion have completed high school, about 6 points above the Illinois average of 92%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Long Creek, IL R+45
- Dalton City, IL R+59
- Elwin, IL R+51
- Decatur, IL D+5
- Macon, IL R+58
- La Place, IL R+49
- Oakley, IL R+53
- Boody, IL R+54
- Lake City, IL R+61
- Oreana, IL R+45
Cities with Similar Populations
- Leesport, PA R+26
- Goldendale, WA R+38
- Inola, OK R+62
- Headland, AL R+57
- Morgantown, KY R+64
- Henryetta, OK R+49
- West Miami, FL R+29
- Standish, ME R+9
- Keene, TX R+44
- River Rouge, MI D+51
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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.