40508 is a Democratic stronghold. About 78% of voters here vote Democratic and 22% Republican.
About 47% of adults in 40508 typically vote, below the U.S. average of about 62%. Among adults in 40508, ~37% vote Democratic, ~10% Republican, and ~53% don't vote. The map below shows estimated turnout by block group.
How 40508 compares
Among zip codes within 15 miles, 40508 is the most Democratic-leaning.
40508 runs about 87 points more Democratic than Kentucky as a whole. Kentucky leans Republican overall, while 40508 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 40508. The east side is the most Democratic-leaning (D+70) and the west side is the least Democratic-leaning (D+41), a spread of about 28 points.
Why 40508 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 40508, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 40508 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 40508 sits in the top quarter (about 47%, above 87% of zip codes). 40508 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; 40508, KY sits in the top tenth nationally on this measure.
Why turnout in 40508 looks the way it does
Renters vote less often than owners. About 74% of households in 40508 rent, about 49 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 40508 sits in the bottom quarter on routine-care measures. High-crime urban areas turn out at lower rates, and 40508 sits in the top 15% on a violent-crime measure. 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.