Greencastle leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 60% of adults in Greencastle typically vote, near the U.S. average of about 62%. Among adults in Greencastle, ~19% vote Democratic, ~41% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How Greencastle compares
Among cities within 25 miles, Greencastle leans more Republican than 2 of 93 neighbors.
Greencastle runs about 16 points more Republican than Indiana as a whole.
Politics vary noticeably by neighborhood within Greencastle. The northwest side is the most Republican-leaning (R+57) and the south side is the least Republican-leaning (R+24), a spread of about 33 points.
Why Greencastle 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 Greencastle, not a ranked or complete list of what matters most.
Greencastle votes Republican even though it is densely developed (about 53%, well above the Indiana average of 25%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; Greencastle, IN sits in the bottom tenth nationally on this measure.
Why turnout in Greencastle looks the way it does
Renters vote less often than owners. About 41% of households in Greencastle rent, about 16 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Putnamville, IN R+50
- Limedale, IN R+55
- Mount Meridian, IN R+59
- Manhattan, IN R+14
- Fillmore, IN R+58
- Clinton Falls, IN R+62
- Pleasant Gardens, IN R+62
- Bainbridge, IN R+60
- Morton, IN R+64
- Cloverdale, IN R+57
Cities with Similar Populations
- Justice, IL D+4
- Atmore, AL R+16
- Forest Park, IL D+67
- Fort Gratiot, MI R+25
- Van Wert, OH R+48
- Bellair-Meadowbrook Terrace, FL R+8
- Smithfield, RI Even
- Marinette, WI R+22
- Saraland, AL R+50
- Greece, NY 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.