Troy Grove leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 69% of adults in Troy Grove typically vote, above the U.S. average of about 62%. Among adults in Troy Grove, ~23% vote Democratic, ~46% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Troy Grove compares
Among cities within 25 miles, Troy Grove leans more Republican than 26 of 68 neighbors.
Troy Grove runs about 44 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Troy Grove is one of the few Republican-leaning pockets.
Why Troy Grove 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 Troy Grove, not a ranked or complete list of what matters most.
Troy Grove votes against the grain of Illinois. Illinois leans Democratic overall, while Troy Grove runs about 44 points more Republican. Car-dependent areas vote Republican, and about 85% of residents in Troy Grove drive to work alone, above 82% of cities. A high family-household share predicts Republican voting, and about 80% of households in Troy Grove are family households, above 89% of cities.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Troy Grove, IL sits in the top tenth nationally on this measure.
Why turnout in Troy Grove looks the way it does
Homeowners vote more often than renters. About 96% of households in Troy Grove own their home, about 17 points above the Illinois average of 80%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Triumph, IL R+40
- Tomahawk Bluff, IL R+28
- Mendota, IL R+19
- Meriden, IL R+40
- Cherry, IL R+42
- Utica, IL R+29
- Lasalle, IL R+9
- Arlington, IL R+36
- Prairie Center, IL R+36
- Dalzell, IL R+22
Cities with Similar Populations
- Fish Pond, AL D+9
- Salladasburg, PA R+66
- Kirtland Afb, NM Even
- Spelterville, IN R+44
- Kit Carson, CO R+71
- St. Leo, MN R+52
- New Dixie, AR R+58
- Garrett, TN R+73
- Schooleys, OH R+58
- Parks, AR R+74
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.