Grundy County is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 63% of adults in Grundy County typically vote, near the U.S. average of about 62%. Among adults in Grundy County, ~10% vote Democratic, ~53% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Grundy County compares
Among counties within 50 miles, Grundy County leans more Republican than 13 of 18 neighbors.
Grundy County runs about 38 points more Republican than Tennessee as a whole.
Politics vary noticeably by city within Grundy County. The northwest side is the most Republican-leaning (R+73) and the southwest side is the least Republican-leaning (R+63), a spread of about 10 points.
Why Grundy County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Grundy County, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Grundy County, about 94% of residents are non-Hispanic white, about 22 points above the U.S. average of 72%; about 14% of adults hold a bachelor's degree, about 8 points below the Tennessee average of 22%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Grundy County, TN sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Grundy County looks the way it does
Homeowners vote more often than renters. About 84% of households in Grundy County own their home, about 7 points above the Tennessee average of 77%. Limited routine healthcare access lines up with lower turnout, and Grundy County sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Marion County, TN R+62
- Sequatchie County, TN R+68
- Coffee County, TN R+55
- Franklin County, TN R+59
- Warren County, TN R+62
- Van Buren County, TN R+71
- Hamilton County, TN R+10
- Dade County, GA R+64
- Moore County, TN R+69
- Bledsoe County, TN R+66
Counties with Similar Populations
- Greene County, MS R+53
- Ford County, IL R+40
- Martinsville City, VA D+22
- Izard County, AR R+65
- Comanche County, TX R+65
- Trinity County, TX R+58
- Madison County, TX R+43
- Calhoun County, FL R+59
- Pend Oreille County, WA R+38
- Stewart County, TN R+67
All Local Stats
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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.