Castleton leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 87% of adults in Castleton typically vote, above the U.S. average of about 62%. Among adults in Castleton, ~33% vote Democratic, ~54% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Castleton compares
Among cities within 25 miles, Castleton leans more Republican than 19 of 85 neighbors.
Castleton runs about 29 points more Republican than Virginia as a whole. Virginia leans Democratic overall, while Castleton is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Castleton. The east side is the most Republican-leaning (R+34) and the northwest side is the least Republican-leaning (R+8), a spread of about 26 points.
Why Castleton 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 Castleton, not a ranked or complete list of what matters most.
Castleton votes against the grain of Virginia. Virginia leans Democratic overall, while Castleton runs about 29 points more Republican. Rural areas vote Republican, and Castleton sits in the bottom quarter on density (about 4%, below 86% of cities).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Castleton, VA sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Castleton looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Castleton is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 70%, about 10 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Rock Mills, VA R+18
- Laurel Mills, VA R+8
- Scrabble, VA R+24
- Woodville, VA R+3
- Rixeyville, VA R+43
- Viewtown, VA R+26
- Boston, VA R+37
- Sperryville, VA R+15
- Washington, VA R+12
- Amissville, VA R+35
Cities with Similar Populations
- Haverhill, NH R+12
- Bannister, MI R+48
- Verona, IL R+48
- Nashua, MT R+56
- Little River, KS R+64
- Meta, KY R+76
- Rock Stream, NY R+31
- Quentin, MS R+75
- Lyndon Center, VT R+19
- Little Rock, SC D+3
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Sources and methodology
Precinct-level voting records used to fit the model come from Virginia Department 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.