40115 is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 56% of adults in 40115 typically vote, below the U.S. average of about 62%. Among adults in 40115, ~10% vote Democratic, ~46% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 40115 compares
Among zip codes within 15 miles, 40115 leans more Republican than 10 of 14 neighbors.
40115 runs about 34 points more Republican than Kentucky as a whole.
Why 40115 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 40115, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 6% of adults in 40115 hold a bachelor's degree, about 12 points below the Kentucky average of 19%. Rural areas vote Republican, and 40115 sits in the bottom quarter on density (about 6%, below 76% of zip codes).
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 40115, KY sits in the bottom tenth 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 40115 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 40115 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 46%, about 9 points below the Kentucky average of 54%. Low high-school completion lines up with lower turnout, and about 75% of adults in 40115 have completed high school, below 95% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Kentucky State Board 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.