Castalian Springs is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 74% of adults in Castalian Springs typically vote, above the U.S. average of about 62%. Among adults in Castalian Springs, ~15% vote Democratic, ~59% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Castalian Springs compares
Among cities within 25 miles, Castalian Springs leans more Republican than 25 of 68 neighbors.
Castalian Springs runs about 30 points more Republican than Tennessee as a whole.
Why Castalian Springs leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Castalian Springs. The lean here lands roughly where demographic data alone would predict.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Castalian Springs, TN sits in the top quarter nationally on this measure.
Why turnout in Castalian Springs looks the way it does
Turnout in Castalian Springs 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
- Chipman, TN R+62
- Kansas, TN R+54
- Bransford, TN R+63
- Hartsville, TN R+59
- Bethpage, TN R+66
- Gallatin, TN R+27
- Taylorsville, TN R+60
- Laguardo, TN R+51
- Graball, TN R+64
- Bledsoe, TN R+63
Cities with Similar Populations
- Kellyville, OK R+66
- Troutville, VA R+44
- Dimmitt, TX R+33
- Butler, KY R+60
- Hillsboro, IL R+37
- Holton, KS R+38
- Lindsborg, KS R+38
- Kawkawlin, MI R+33
- Alturas, CA R+44
- Florida, NY R+12
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.