Castleton leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 57% of adults in Castleton typically vote, near the U.S. average of about 62%. Among adults in Castleton, ~38% vote Democratic, ~18% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How Castleton compares
Castleton sits in a sparsely populated area with few comparable neighborhoods nearby.
Castleton runs about 56 points more Democratic than Indiana as a whole. Indiana leans Republican overall, while Castleton is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within Castleton. The west side is the most Democratic-leaning (D+51) and the south side is the least Democratic-leaning (D+17), a spread of about 34 points.
Why Castleton leans the way it does
This analysis examined 14,881 data points per neighborhood 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 Indiana. Indiana leans Republican overall, while Castleton runs about 56 points more Democratic.
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; Castleton, Indianapolis, IN sits in the bottom quarter nationally on this measure.
Why turnout in Castleton looks the way it does
Renters vote less often than owners. About 67% of households in Castleton rent, about 42 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Hearth Stone, Indianapolis, IN D+36
- Nora, Indianapolis, IN D+34
- Broad Ripple, Indianapolis, IN D+48
- Geist, Indianapolis, IN Even
- Devington, Indianapolis, IN D+78
- North Willow Farms, Indianapolis, IN D+49
- Meridian-Kessler, Indianapolis, IN D+57
- Westchester Estates, Indianapolis, IN D+55
- Mapleton-Fall Creek, Indianapolis, IN D+73
- Martindale-Brightwood, Indianapolis, IN D+66
Neighborhoods with Similar Populations
- Ashley Park, Charlotte, NC D+66
- Golden Gate, Stuart, FL R+12
- Piscataquog, Manchester, NH D+24
- McClymonds, Oakland, CA D+71
- McIntosh, Newport News, VA D+47
- Embudo Canyon, Albuquerque, NM D+20
- Wilshire, San Antonio, TX D+17
- Conservatory, Aurora, CO D+14
- Hickman Mills, Kansas City, MO D+52
- Marietta Historic District, Marietta, OH Even
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.