15778 is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 55% of adults in 15778 typically vote, below the U.S. average of about 62%. Among adults in 15778, ~7% vote Democratic, ~48% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 15778 compares
Among zip codes within 15 miles, 15778 leans more Republican than 32 of 33 neighbors.
15778 runs about 73 points more Republican than Pennsylvania as a whole.
Why 15778 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 15778, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 10% of adults in 15778 hold a bachelor's degree, about 16 points below the Pennsylvania average of 26%. A high family-household share predicts Republican voting, and about 75% of households in 15778 are family households, above 80% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 15778, PA sits in the bottom quarter 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 15778 looks the way it does
Areas with low high-school completion turn out at lower rates. About 86% of adults in 15778 have completed high school, below 79% 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.