40820 is a Republican stronghold. About 11% of voters here vote Democratic and 89% Republican.
About more than 99% of adults in 40820 typically vote, above the U.S. average of about 62%. Among adults in 40820, ~11% vote Democratic, ~91% Republican, and ~-2% don't vote. The map below shows estimated turnout by block group.
How 40820 compares
Among zip codes within 15 miles, 40820 leans more Republican than 21 of 29 neighbors.
40820 runs about 48 points more Republican than Kentucky as a whole.
Why 40820 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 40820, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 40820, about 99% of residents are non-Hispanic white, about 27 points above the U.S. average of 72%; about 8% of adults hold a bachelor's degree, about 11 points below the Kentucky average of 19%. Rural areas vote Republican, and 40820 sits in the bottom quarter on density (about 4%, below 88% of zip codes).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 40820, KY sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 40820 looks the way it does
Homeowners vote more often than renters. More than 99% of households in 40820 own their home, about 22 points above the Kentucky average of 78%. Limited routine healthcare access lines up with lower turnout, and 40820 sits in the bottom quarter on routine-care measures. 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.