42104 leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 69% of adults in 42104 typically vote, above the U.S. average of about 62%. Among adults in 42104, ~29% vote Democratic, ~40% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How 42104 compares
Among zip codes within 15 miles, 42104 leans more Republican than 1 of 6 neighbors.
42104 runs about 15 points more Democratic than Kentucky as a whole.
Politics vary noticeably by block within 42104. The northwest side runs the most Democratic (Even) and the southeast side runs the most Republican (R+39), a spread of about 40 points.
Why 42104 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 42104, not a ranked or complete list of what matters most.
42104 votes Republican even though it is densely developed (about 72%, far above the Kentucky average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; 42104, KY sits in the bottom quarter nationally on this measure.
Why turnout in 42104 looks the way it does
Turnout in 42104 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.