Sun River Terrace is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 64% of adults in Sun River Terrace typically vote, near the U.S. average of about 62%. Among adults in Sun River Terrace, ~33% vote Democratic, ~31% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Sun River Terrace compares
Among cities within 25 miles, Sun River Terrace sits roughly in the middle of the political spectrum, with 66 neighbors leaning further in the place's direction and 7 leaning the other way.
Sun River Terrace runs about 10 points more Republican than Illinois as a whole.
Politics vary noticeably by neighborhood within Sun River Terrace. The north side runs the most Democratic (D+19) and the northeast side runs the most Republican (R+44), a spread of about 63 points.
Why Sun River Terrace leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Sun River Terrace. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Sun River Terrace, IL sits above the national average on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Sun River Terrace looks the way it does
Turnout in Sun River Terrace sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- St. Anne, IL R+36
- Aroma Park, IL R+29
- Wichert, IL R+45
- St. George, IL R+38
- Momence, IL R+25
- Leesville, IL R+49
- Bradley, IL R+13
- Kankakee, IL D+23
- Hopkins Park, IL D+69
- Pembroke Township, IL D+62
Cities with Similar Populations
- Green City, MO R+67
- Sagamore, MA D+13
- Rozellville, WI R+40
- Herrings, NY R+33
- Chester Hill, PA R+44
- Troy, MS R+50
- Antioch, AL R+25
- Hoover, MO R+32
- Vashti, NC R+64
- Flordell Hills, MO D+83
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.