Green Oaks, IL Political Map | Democrat & Republican Areas in Green Oaks

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

Green Oaks leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.

 

About 90% of adults in Green Oaks typically vote, above the U.S. average of about 62%. Among adults in Green Oaks, ~49% vote Democratic, ~41% Republican, and ~10% don't vote. The map below shows estimated turnout by block group.

How Green Oaks compares

Among cities within 25 miles, Green Oaks leans more Democratic than 77 of 131 neighbors.

Politically, Green Oaks sits close to the rest of Illinois.

Politics vary noticeably by neighborhood within Green Oaks. The east side is the most Democratic-leaning (D+22) and the north side is the least Democratic-leaning (D+8), a spread of about 15 points.

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

Areas with high college attainment vote Democratic. About 71% of adults in Green Oaks hold a bachelor's degree, about 42 points above the U.S. average of 28%. Dense areas vote Democratic, and Green Oaks sits in the top fifth on density (about 67%, above 91% of cities).

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Green Oaks, IL sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Green Oaks looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Green Oaks is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 74%, about 14 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in Green Oaks own their home, compared to around 68% in nearby cities. High high-school completion lines up with higher turnout, and about 97% of adults in Green Oaks have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.

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.