Mounds, IL Political Map | Democrat & Republican Areas in Mounds

By the BestNeighborhood data science team. Last updated May 2026.

Mounds leans Democratic by roughly 26 points: about 63% of voters vote Democratic and 37% Republican.

 

About 55% of adults in Mounds typically vote, below the U.S. average of about 62%. Among adults in Mounds, ~35% vote Democratic, ~20% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.

How Mounds compares

Among cities within 25 miles, Mounds leans more Democratic than 75 of 76 neighbors.

Mounds runs about 16 points more Democratic than Illinois as a whole.

Politics vary noticeably by neighborhood within Mounds. The east side runs the most Democratic (D+38) and the northeast side runs the most Republican (R+26), a spread of about 65 points.

Why Mounds 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 Mounds, not a ranked or complete list of what matters most.

Areas with many never-married adults vote Democratic. About 46% of adults in Mounds have never been married, well above similar-sized cities (around 24%).

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Mounds, IL sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Mounds looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Mounds is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 46% of households in Mounds rent, about 21 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 27% of adults in Mounds report food insecurity, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.