Greenbrier is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 79% of adults in Greenbrier typically vote, above the U.S. average of about 62%. Among adults in Greenbrier, ~18% vote Democratic, ~61% Republican, and ~21% 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 26 of 64 neighbors.
Greenbrier runs about 25 points more Republican than Tennessee as a whole.
Politics vary noticeably by neighborhood within Greenbrier. The southwest side is the most Republican-leaning (R+63) and the southeast side is the least Republican-leaning (R+48), a spread of about 15 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.
Greenbrier votes Republican even though it is densely developed (about 28%, modestly above the Tennessee average of 21%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 76% of households in Greenbrier are family households, above 78% of cities.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Greenbrier, TN sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Greenbrier looks the way it does
Turnout in Greenbrier 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
- Ridgetop, TN R+53
- Springfield, TN R+24
- Millersville, TN R+46
- Flewellyn, TN R+65
- Joelton, TN R+50
- Coopertown, TN R+63
- White House, TN R+49
- Goodlettsville, TN R+8
- Mount Denson, TN R+58
- Pinnacle, TN R+57
Cities with Similar Populations
- Piedmont, OK R+50
- Boyds, MD D+40
- California, MD R+3
- Sunbury, OH R+29
- Whitestown, IN R+9
- Country Club, CA D+7
- Wauchula, FL R+41
- Florence, OR D+12
- Buzzards Bay, MA D+6
- Mounds View, MN D+22
All Local Stats
Home Services
Sources and methodology
Precinct-level voting records used to fit the model come from Tennessee Secretary of State, Division 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.