Mound City leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 60% of adults in Mound City typically vote, near the U.S. average of about 62%. Among adults in Mound City, ~32% vote Democratic, ~28% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How Mound City compares
Among cities within 25 miles, Mound City leans more Democratic than 71 of 74 neighbors.
Politically, Mound City sits close to the rest of Illinois.
Why Mound City leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Mound City. The lean here lands roughly where demographic data alone would predict.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Mound City, IL sits above the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Mound City looks the way it does
Renters vote less often than owners. About 52% of households in Mound City rent, about 27 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 24% of adults in Mound City report food insecurity, above 89% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mounds, IL D+27
- Spencer Heights, IL D+22
- Villa Ridge, IL R+39
- Cairo, IL D+42
- North Mounds, IL Even
- Barlow, KY R+65
- Olmsted, IL R+54
- Oscar, KY R+61
- Pulaski, IL R+22
Cities with Similar Populations
- Cocked Hat, DE R+38
- Lima Center, MI Even
- Walkersville, WV R+62
- Pansy, OH R+64
- Tigrett, TN R+69
- Gasburg, VA R+20
- Beaverville, IL R+50
- Lomax, IL R+48
- Wilson, LA R+11
- Dola, WV R+64
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.