40502 leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 75% of adults in 40502 typically vote, above the U.S. average of about 62%. Among adults in 40502, ~50% vote Democratic, ~25% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 40502 compares
Among zip codes within 15 miles, 40502 leans more Democratic than 16 of 20 neighbors.
40502 runs about 65 points more Democratic than Kentucky as a whole. Kentucky leans Republican overall, while 40502 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 40502. The north side is the most Democratic-leaning (D+59) and the southeast side is the least Democratic-leaning (D+16), a spread of about 43 points.
Why 40502 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 40502, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 98% of residents in 40502 live in densely developed areas, about 61 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 40502 sits in the top quarter (about 66%, above 96% of zip codes). 40502 runs against the grain of Kentucky, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 40502, KY sits in the top quarter nationally on this measure.
Why turnout in 40502 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 40502 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 68%, about 8 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in 40502 have completed high school, above 84% 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.