15617 leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 79% of adults in 15617 typically vote, above the U.S. average of about 62%. Among adults in 15617, ~25% vote Democratic, ~54% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 15617 compares
Among zip codes within 15 miles, 15617 leans more Republican than 48 of 79 neighbors.
15617 runs about 35 points more Republican than Pennsylvania as a whole.
Why 15617 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 15617. The lean here lands roughly where demographic data alone would predict.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 15617, PA sits in the top tenth nationally on this measure.
Why turnout in 15617 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 15617 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 69%, about 9 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 96% of households in 15617 own their home, compared to around 80% in nearby zip codes. High high-school completion lines up with higher turnout, and about 97% of adults in 15617 have completed high school, above 90% 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.