Greenbrier leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 71% of adults in Greenbrier typically vote, above the U.S. average of about 62%. Among adults in Greenbrier, ~18% vote Democratic, ~53% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Greenbrier compares
Among cities within 25 miles, Greenbrier leans more Republican than 25 of 81 neighbors.
Greenbrier runs about 30 points more Republican than Indiana as a whole.
Politics vary noticeably by neighborhood within Greenbrier. The northeast side is the most Republican-leaning (R+55) and the southwest side is the least Republican-leaning (R+43), a spread of about 12 points.
Why Greenbrier 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 Greenbrier, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Greenbrier drive to work alone, about 15 points above the U.S. average of 74%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Greenbrier, IN sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Greenbrier looks the way it does
Homeowners vote more often than renters. About 91% of households in Greenbrier own their home, about 9 points above the Indiana average of 82%. High high-school completion lines up with higher turnout, and about 96% of adults in Greenbrier have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Boonville, IN R+40
- Folsomville, IN R+55
- Chandler, IN R+40
- Lynnville, IN R+51
- Tennyson, IN R+55
- Spurgeon, IN R+53
- Elberfeld, IN R+51
- Stevenson, IN R+33
- Bullocktown, IN R+51
- Heilman, IN R+56
Cities with Similar Populations
- Lamb, KY R+74
- Blue John, KY R+76
- Clayhill, AL R+7
- Hightowers, NC D+18
- Blanchard, ME R+38
- Hemlock Center, NH R+30
- Moores Corners, PA R+50
- Haverhill, OH R+56
- Crudup, AL R+87
- Shady Grove, VA R+36
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana Secretary of State, 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.