15636 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 98% of adults in 15636 typically vote, above the U.S. average of about 62%. Among adults in 15636, ~37% vote Democratic, ~61% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.
How 15636 compares
Among zip codes within 15 miles, 15636 leans more Republican than 40 of 80 neighbors.
15636 runs about 23 points more Republican than Pennsylvania as a whole.
Why 15636 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 15636, not a ranked or complete list of what matters most.
15636 votes Republican even though it is densely developed (about 62%, well above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 78% of households in 15636 are family households, above 87% of zip codes.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 15636, PA sits in the top tenth nationally on this measure.
Why turnout in 15636 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 15636 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 89% of households in 15636 own their home, above 84% of zip codes. High high-school completion lines up with higher turnout, and more than 99% of adults in 15636 have completed high school, above 98% 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 Pennsylvania Department of State, Bureau 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.