40171 is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 61% of adults in 40171 typically vote, near the U.S. average of about 62%. Among adults in 40171, ~10% vote Democratic, ~51% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 40171 compares
Among zip codes within 15 miles, 40171 is the most Republican-leaning.
40171 runs about 35 points more Republican than Kentucky as a whole.
Why 40171 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 40171, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 4% of residents in 40171 live in densely developed areas, about 14 points below the Kentucky average of 18%. Low college attainment predicts Republican voting, and 40171 sits in the bottom quarter (about 14%, below 85% of zip codes). A high family-household share predicts Republican voting, and about 79% of households in 40171 are family households, above 89% of zip codes.
Population density and Republican lean
Places with low population density tend to lean Republican; 40171, KY sits in the bottom quarter nationally on this measure.
Why turnout in 40171 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 40171 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 48%, about 7 points below the Kentucky average of 54%. Low high-school completion lines up with lower turnout, and about 84% of adults in 40171 have completed high school, below 83% 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.