Fairmont City leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 42% of adults in Fairmont City typically vote, below the U.S. average of about 62%. Among adults in Fairmont City, ~22% vote Democratic, ~20% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.
How Fairmont City compares
Among cities within 25 miles, Fairmont City leans more Democratic than 80 of 169 neighbors.
Fairmont City runs about 5 points more Republican than Illinois as a whole.
Politics vary noticeably by neighborhood within Fairmont City. The west side runs the most Democratic (D+12) and the northeast side runs the most Republican (R+7), a spread of about 19 points.
Why Fairmont City 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 Fairmont City, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 72% of residents in Fairmont City live in densely developed areas, about 36 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 36% of adults in Fairmont City have never been married, above 89% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Fairmont City, IL sits in the top quarter nationally on this measure.
Why turnout in Fairmont City looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Fairmont City is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 46%, about 17 points below the Illinois average of 63%. High food insecurity lines up with lower turnout, and about 37% of adults in Fairmont City report food insecurity, above 98% of cities. Low high-school completion lines up with lower turnout, and about 71% of adults in Fairmont City have completed high school, below 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Washington Park, IL D+63
- East St. Louis, IL D+83
- Lovejoy, IL D+74
- Brooklyn, IL D+85
- Madison, IL D+39
- Venice, IL D+87
- State Park Place, IL D+12
- Alorton, IL D+82
- Centreville, IL D+84
- Granite City, IL R+13
Cities with Similar Populations
- Greenville, NH R+15
- Earlville, NY R+34
- Lyons, OR R+31
- Logan, AL R+85
- Lake Lotawana, MO R+31
- Summitville, IN R+51
- Golden Meadow, LA R+70
- Woodward, IA R+32
- Shorewood Hills, WI D+86
- Osseo, MI R+47
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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.