40003 is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 84% of adults in 40003 typically vote, above the U.S. average of about 62%. Among adults in 40003, ~21% vote Democratic, ~63% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 40003 compares
Among zip codes within 15 miles, 40003 leans more Republican than 6 of 10 neighbors.
40003 runs about 20 points more Republican than Kentucky as a whole.
Politics vary noticeably by block within 40003. The northeast side is the most Republican-leaning (R+54) and the southwest side is the least Republican-leaning (R+43), a spread of about 11 points.
Why 40003 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 40003, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 75% of households in 40003 are family households, about 8 points above the U.S. average of 67%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 40003, 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 40003 looks the way it does
Homeowners vote more often than renters. About 95% of households in 40003 own their home, about 17 points above the Kentucky average of 78%. 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.